Drug resistance is the major cause of increase in morbidity and mortality in neonates. One thousand six hundred forty-seven suspected septicemic neonates were subjected for microbiological analysis over a period of 5 years. Forty-two P. aeruginosa were isolated and the antibiogram revealed that 28 P. aeruginosa were resistant to almost all the common drugs used (multidrug-resistant). The emergence of antibiotic-resistant bacterial strains is one of the most critical problems of modern medicine. As a result, a novel and most effective approaches for treating infection caused by multidrug-resistant bacteria are urgently required. In this context, one intriguing approach is to use bacteriophages (viruses that kill bacteria) in the treatment of infection caused by drug-resistant bacteria. In the present study, the utility of lytic bacteriophages to rescue septicemic mice with multidrug-resistant (MDR) P. aeruginosa infection was evaluated. MDR P. aeruginosa was used to induce septicemia in mice by intraperitoneal (i.p.) injection of 10 ⁷ CFU. The resulting bacteremia was fatal within 48 hrs. The phage strain used in this study had lytic activity against a wide range of clinical isolates of MDR P. aeruginosa. A single i.p. injection of 3 × 10 ⁹ PFU of the phage strain, administered 45 min after the bacterial challenge, was sufficient to rescue 100% of the animals. Even when treatment was delayed to the point where all animals were moribund, approximately 50% of them were rescued by a single injection of this phage preparation. The ability of this phage to rescue septicemic mice was demonstrated to be due to the functional capabilities of the phage and not to a nonspecific immune effect. The rescue of septicemic mice could be affected only by phage strains able to grow in vitro on the bacterial host used to infect the animals and when such strains are heat-inactivated, they lose their ability to rescue the infected mice. Multidrug-resistant bacteria have opened a second window for phage therapy. It would seem timely to begin to look afresh at this approach. A scientific methodology can make phage therapy as a stand-alone therapy for infections that are fully resistant to antibiotics.

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Aims: Diabetic foot lesions are a major medical, social, and economic problem and are the leading cause of hospitalization for patients with diabetes, worldwide. ESBL-producing bacteria may not be detectable by routine disc diffusion susceptibility test, leading to inappropriate use of antibiotics and treatment failure. There is not much information on ESBL-producing organisms causing diabetic foot infection. An attempt was therefore made to study the ESBL-producing Escherichia coli and Klebsiella pneumoniae in diabetic foot patients with type 2 diabetes mellitus. Materials and Methods: A total of 134 isolates of E. coli and K. pneumoniae were obtained from tissue, pus swab, and wound swab samples from diabetic foot ulcers submitted for routine microbiological analysis during the period January to December 2005 from patients with diabetic foot infections who had type 2 diabetes mellitus, attending S. L. Raheja Hospital. The above isolates were tested for antimicrobial susceptibility by disc diffusion technique according to clinical and laboratory standards institute (CLSI) guidelines. The screening for ESBL production was done by phenotypic confirmatory test using ceftazidime disc in the presence and absence of clavulanic acid as recommended by CLSI. Results: Among the 134 isolates, 54 (40.29%) were E. coli and 80 (59.70%) were K. pneumoniae; among which, ESBL production was detected in 31 (23.13%) isolates. Of these 31, 15 (48.38%) were E. coli and 16 (51.61%) were K. pneumoniae. All the ESBL-producing isolates were found to be 100% sensitive to carbapenem (imipenem and meropenem). Mortality was found to be 3.22%, the cause of death being septicemia leading to multiple organ failure. Conclusions: The prevalence of ESBLs among members of Enterobacteriaceae constitutes a serious threat to the current beta-lactam therapy, leading to treatment failure and consequent escalation of costs. There is an urgent need to emphasize rational use of drugs to minimize the misuse of available antimicrobials.

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Background: Angiogenesis has been well documented in hepatocellular carcinoma (HCC). As liver cirrhosis is considered preneoplastic condition, the aim of this study was to evaluate the process of angiogenesis using CD 34 as an endothelial cell marker in normal liver, cirrhosis and HCC. Materials and Methods: A total of 111 cases were included in this study, which consisted of 30 cases each of normal liver and cirrhosis that were all autopsy cases. Twenty-one cases of HCC included 10 autopsy specimens, nine surgically resected specimens and two liver biopsies. Remaining were 30 cases of metastasis to the liver, which included 20 autopsy specimens, one surgically resected specimen and nine liver biopsies. The patients were between the age range from 17 to 80 years with 70 males and 11 females. Paraffin-embedded liver sections of all these cases were stained routinely by hematoxylin-eosin stain, while immunohistochemistry for CD 34 was performed for expression of endothelial cells. The positivity of CD 34 staining was evaluated by counting in 10 high-power field, grading was done from 0 to 4 and compared between normal liver, cirrhosis and HCC and metastasis. Results: CD 34 was positive in 16/30 (53.3%) cases of cirrhosis, 18/21 (85%) cases of HCC and 26 (86.6%) of metastasis to the liver. None of the normal liver showed any positivity. Grade 3 to 4 positivity was seen in 4/16 (25%) and 13/18 (72%) cases of cirrhosis and HCC, respectively. Amongst these, 10 were moderately differentiated, one well differentiated and rest two were fibrolamellar and sarcomatoid variants of HCC. Conclusion: Over expression of endothelial cell marker CD 34 with gradual progression was found from normal liver to cirrhosis to HCC and metastasis. Understanding of this process of angiogenesis might help in the design of efficient and safe antiangiogenic therapy for these liver disorders.

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Primitive neuroectodermal tumors (PNETs) are malignant proliferations of small, undifferentiated neuroectodermal cells occurring mainly in children and share the same reciprocal translocation between chromosomes 11 and 22 and the same patterns of biochemical and oncogene expression as osseus and extraosseus Ewing's sarcoma. Some PNETs occur in the brain, while others (the peripheral PNETs) occur in sites outside the brain, such as in the extremities, pelvis and the chest wall. They mostly originate in the chest, pelvis and retroperitoneum; in rare cases, occurrence in the head and neck area has also been seen. We present a rare case of primitive neuroectodermal tumor arising in the prostate gland in a 25-year-old male. To the best of our knowledge, this is the first documentation of a primary peripheral primitive neuroectodermal tumor in the prostate gland of any patient from India and rarely reported in English literature.

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Aspergilloma refers to a fungal ball formed by saprophytic overgrowth of Aspergillus species and is seen secondary to cavitatory/cystic respiratory diseases. Paucity of clinical and pathological data of aspergilloma in India prompted us to analyze cases of aspergilloma over 15 years. The clinical features were recorded in all and correlated with detailed pathological examination. Aspergillomas were identified in 41 surgical excisions or at autopsy. There was male predominance; half the patients were in their fourth decade. Episodic hemoptysis was the commonest mode of presentation (85.4%). Forty aspergillomas were complex, occurring in cavitatory lesions (82.9%) or in bronchiectasis (14.6%). Simple aspergilloma was seen as an incidental finding in only one. Tuberculosis was the etiological factor in 31 patients, producing cavitatory or bronchiectatic lesions; other causes were chronic lung abscess and bronchiectasis (unrelated to tuberculosis). Surgical resections are endorsed in view of high risk of unpredictable, life-threatening hemoptysis.

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Context: Clindamycin is one of the important alternative antibiotics in the therapy of Staphylococcus aureus, particularly in methicillin-resistant S. aureus (MRSA) infections. Inducible clindamycin resistance (iMLS _B - inducible Macrolide-Lincosamide-Streptogramin B resistance) is a critical factor in antimicrobial susceptibility testing. Aims: To know the rate of inducible clindamycin resistance among clinical isolates of Staphylococcus aureus in our hospital by Disk approximation test (D-test) using the average recommended inter-disk distance and comparing the results with that of D-test using the lower limit of recommended inter-disk distance. Materials and Methods: A total of 51 erythromycin-resistant and clindamycin-susceptible S. aureus isolates were subjected to disk approximation testing with 21 ± 1 mm and 15 mm edge-to-edge distance between the clindamycin and erythromycin disks. Statistical Methods: Z-test levels. Results: Among 51 erythromycin-resistant and clindamycin-susceptible S. aureus isolates, 25 (49%) were recorded as inducible clindamycin resistant by D-test with 21 ± 1 mm edge-to-edge distance between the clindamycin and erythromycin disks. When we re-tested all the 51 strains by D-test with 15 mm inter-disk distance, we identified 14% more iMLS _B strains previously reported as D-test negative. Z-test for MRSA indicates that 15 mm edge-to-edge distance has significant advantage. Conclusions: Since the incidence of inducible clindamycin resistance is high (63% in our study), accurate identification of inducible clindamycin resistance is important to prevent therapeutic failure in infections caused by these strains. We suggest the use of D-test with 15 mm edge-to-edge inter-disk distance for detecting iMLS _B .

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Tubercular involvement of liver is rare and usually occurs in association with pulmonary or miliary tuberculosis, as diffuse involvement without recognizable pulmonary tuberculosis or rarely in a localized form, which presents as a tuberculoma or tubercular abscess. We report the case of a 22-year-old boy presenting with features of obstructive jaundice and a clinico-radiological picture highly suggestive of a perihilar cholangiocarcinoma (Klatskin tumor), but found to have tubercular involvement of porta hepatis. We review the literature on this unusual presentation, highlight the considerable diagnostic challenge such cases can pose, and also emphasize the need to consider tuberculosis in differential diagnosis of lesions involving the porta hepatis, particularly in areas endemic for the disease.

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To evaluate the diagnostic efficacy of various screening tests in detecting asymptomatic bacteriuria among pregnant women. Clean catch midstream urine specimens were collected from 630 consecutive pregnant women and processed. Forty-four (7.4%) of the urine samples were culture positive, with Escherichia coli as the predominant organism isolated (57.4%). The results of the four screening tests, viz., Gram's staining of uncentrifuged urine, pus cell count, nitrite test and leukocyte esterase (LE) test, were compared against urine culture. Gram's stain of the uncentrifuged urine was found to be the single most useful test with a sensitivity and negative predictive value (NPV) of 85.1% and 98.8%, respectively. Pus cell count was the least sensitive. Neither the nitrite test nor the LE test alone was sensitive enough with 74.4% and 61.7%, respectively. However, when either or both tests positive were considered, it increased the sensitivity and NPV comparable with Gram's staining results, with 82.9% and 98.8%, respectively. With the potential to be used as an office diagnostic procedure, the combined nitrite and LE dipstick test may provide an acceptable alternative.

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Granulosa cell tumor (GCT) of the adult type is a rare and slow-growing neoplasm in the testis. This tumor may be associated with endocrine manifestations and resemble classic GCT of the ovary morphologically. It has a potential for distant metastasis or recurrence late in the clinical course. We report a case of granulose cell tumor of the testis, adult type.

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Resistance to broad spectrum β lactams, mediated by extended spectrum beta lactamase (ESβL) and AmpC βL enzymes is an increasing problem worldwide. Presence of these in clinical infections can result in treatment failure if one of the second or third generation cephalosporins is used. Therefore, it is recommended that any ESβL-producing organism according to the National Committee for Clinical Laboratory Standards (NCCLS) criteria can be reported as resistant to all extended spectrum β lactam antibiotics regardless of the susceptibility test results. In this study, a total of 250 Escherichia coli (E. coli) isolates were subjected to Double disc test and AmpC disc test for the detection of ESβL- and AmpC βL-producing strains, respectively. Prevalence of ESβL- and AmpC βL-producing strains among E. coli isolates, over a 3-month-period in the hospital-based population of Jaipur, was 64.80% (162/250). AmpC βL producers were 24.00% (60/250) and co-existence of ESβL and AmpC βL was detected in 8.00% (20/250) of the isolates.

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Primary lymphomas of appendix are extremely rare tumors. The first case of primary lymphoma of appendix was reported by Warren in the year 1898. Incidence of primary lymphoma of appendix is 0.015% of all gastrointestinal lymphomas. This is a report of primary marginal zone B-cell lymphoma of appendix which presented as appendicular mass. As some cases are incidentally discovered, this case emphasizes that histological examination of all appendicectomy specimens is mandatory.

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Five hundred endometrial specimens were studied to document the changes in blood vessels in various phases of menstrual cycle, menstrual disturbances and in unexplained infertility. Sixty-three cases were taken as control and 437 cases as study group which included cases of dysfunctional uterine bleeding (DUB), endometrial polyps, fibroids, adenomyosis, infertility and atrophic endometrium. Using light microscopy, the vascular morphology was studied. The blood vessels were concentrated more in basal layer in the proliferative phase and in functional layer in the secretory phase. Cases of complex hyperplasia and pill endometrium had significantly higher vessel concentration. Congestion and dilatation of blood vessels were significantly higher in cases of DUB. The present study showed a positive correlation between endometrial angiogenesis and menstrual disorders. The alteration in blood vessel morphology has significant role in prognosis and in various anti-angiogenic therapies.

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Background: Infection with cytomegalovirus (CMV) is more common in developing nations and the people belonging to the lower socioeconomic section of the society. The immunosuppressed population for whom CMV-seronegative blood products are requested is increasing due to advances in medical care. Aim: To study the prevalence of CMV antibodies among the different sexes and age groups in healthy blood donors. Materials and Methods: A retrospective study was done on 5600 serum samples stored frozen in a repository for CMV antibodies using the ELISA technique. Results: Five thousand three hundred and fifty (95.5%) were male and 250 (4.5%) were female. Four cases (0.071%) out of 5600 samples were positive for anti-IgM CMV with 95% Confidence Interval (95% C.I) of 0.02 - 0.17. Conclusion: In a developing country like India, screening for IgM antibody on a routine basis may not be feasible, given the likely positive yield to be low and the cost being high. It is recommended that in a tertiary care hospital, blood units to be transfused to neonates, organ transplant recipients, those suffering from malignancies and other immunocompromised patients should be screened for anti-IgM CMV or preventive strategies like universal leucodepletion to be implemented to decrease the transmission of CMV in these groups of patients.

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A case of primary mucosa-associated lymphoid tissue (MALT) lymphoma (marginal zone B-cell lymphoma of MALT according to WHO classification) in conjunctiva, which presented as a slowly growing salmon-colored mass at limbus of left eye is reported. Histological examination revealed a diffuse low-grade lymphoma. Immunohistochemical analysis using monoclonal antibodies showed that the tumor cells are leukocyte common antigen (CD45)+, CD20+, CD3−, CD5−, CD10− and CD43−, which confirmed the B-cell lineage of lymphoma. The case is being reported for its rarity and clinical importance of recognizing such cases because of excellent prognosis.

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In April 2006, a 55-year-old female presented with a thyroid mass and multiple skin nodules on scalp, forehead and neck. Fine needle aspiration cytology of thyroid mass and multiple skin nodules show tumor cells clusters in a repetitive microfollicular pattern on May-Grunwald-Giemsa stain suggestive of follicular thyroid carcinoma with metastasis to skin. Although follicular carcinoma have a propensity for vascular invasion and hematogenous dissemination, skin is not commonly involved. Only a few cases of cutaneous metastasis from follicular thyroid carcinoma are reported in the English language literature.

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Primary renal fibrosarcoma is a rare tumor. We describe a case of primary renal fibrosarcoma in a 54-year-old male who presented with abdominal lump and intermittent hematuria.

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Acute promyelocytic leukemia (APML) is a well-characterized malignancy with typical clinico-hematological and molecular features. However, Indian data on this malignancy are limited. This study was conducted to determine the clinico-hematological profile of APML in India. Thirty-five patients with APML presenting to Hematology Department, AIIMS, New Delhi, between July 2003 and June 2005 were evaluated for presenting clinical features, hemogram, peripheral smear, bone marrow morphology and cytochemistry. Reverse transcriptase PCR (RT-PCR) for PML-RARα was done in all cases. Male-to-female ratio was 0.9:1 (males - 17 and females - 18) with median age 25 years (range 11-57 years). Presenting features included anemia, bleeding, fever, gum hypertrophy and scrotal ulceration. All cases showed hypergranular abnormal promyelocytes. Median hemoglobin was 6.3 g/dL (range - 3.0-9.0 g/dL), total leukocyte count (TLC) was 33.88 × 10 ⁹ /L (range - 1-170 × 10 ⁹ /L). Platelet count was 28 × 10 ⁹ /L (range - 4-170 × 10 ⁹ /L). All cases were positive for myeloperoxidase and sudan black (SB), whereas 60% cases also showed non specific esterase (NSE) positivity with 40% cases being fluoride sensitive. RT-PCR showed PML-RARα in 33/35 cases with the bcr3 isoform being present in 24/33 positive cases (72.7%). The two cases negative for PML-RARα showed typical morphology and responded to ATRA. On statistical analysis, no correlation was found between bcr isoform and TLC, platelet count, age sex and early death. Unusual features included gum hypertrophy and scrotal ulceration at presentation and high median presenting TLC (33.8 × 10 ⁹ /L). There was, however, no microgranular variant. Another interesting feature was a high incidence of NSE positivity (60%), which was fluoride sensitive in 40%. Moreover, the bcr3 isoform was significantly overexpressed (72.7%) in comparison to other studies. APML in India has certain unusual features, which may reflect a different biology.

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Concurrent or synchronous angiosarcoma (AS) of breast is a rarity. Specific recognition of this neoplasm in cytological specimens is difficult and conclusive diagnosis in the absence of ancillary methods is achieved only uncommonly. Herein, we present a case of bilateral AS of breasts in a 32-year-old lady diagnosed by fine needle aspiration (FNA) cytology, thus enabling a definitive surgical approach. This case report emphasizes that when aspiration smears show vasoformative features consisting of microacini, arborizing microtissue fragments and intracytoplasmic lumen against a bloody background, diagnosis can be made conclusively by FNA with immunohistochemical confirmation.

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Amyloidosis is characterized by extracellular deposition of a proteinaceous, hyaline material. Localized deposition of amyloid in individual organs is uncommon. It can occur in the absence of systemic involvement. Herein, we describe two cases of localized amyloidosis of the urinary bladder, which clinically, radiologically, and on cystoscopy masqueraded as bladder cancer. A diagnosis of amyloidosis in both these cases was ascertained on biopsy, supplemented with special stains.

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Intussusception is defined as telescoping of a segment of gastrointestinal tract into an adjacent one. In small children, it is the commonest cause of intestinal obstruction. More than 90% of childhood intussusceptions are idiopathic. We report a rare case of localized small intestinal lymphangiectasia, presenting as intussusception in a 6-month-old male child. The child presented with features of acute intestinal obstruction for which he was later operated. The gross examination of excised ileocecal mass revealed intussusception. Histopathologic examination revealed lymphangiectasia of small intestine, which acted as a lead point for ileocecal intussusception. Postoperative period was uneventful.

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We present clinical features, histopathology and results of treatment in cases of mantle cell lymphoma (MCL) at our hospital. We had 93 cases (2.1%) of MCL out of total 4301 cases of non-Hodgkin's lymphoma (NHL) in a 4-year period. It included 68 cases (1.7%) of MCL from 3987 cases of NHL diagnosed on histopathology. Remaining 25 cases (7.9%) diagnosed solely on peripheral blood examination were excluded. Thirty-six (85%) patients had advanced-stage disease. Sixty-three were nodal and five were extranodal (all gastrointestinal tract). Common patterns were diffuse (64%), nodular (25%) and mantle zone type (11%). Sixty-two cases had lymphocytic while six had blastic morphology (all nodal). Tumor cells expressed CD20 (100%), CD43 (94%), CD5 (89%) and cyclin D1 (85%). Bone marrow was involved in 25 (59%) cases. Thirty-two patients could be treated. Median recurrence-free survival was 22.23 months. Diffuse pattern of nodal involvement had a lower overall survival.

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Lissencephaly is a malformation of the brain in which the brain surface is smooth, rather than convoluted. Among the various causes of lissencephaly, infection by a virus during pregnancy plays an important role. Cytomegalovirus (CMV) is an important pathogen causing this anomaly. We present this case of a young female with 24-week-gestation diagnosed on ultrasound as carrying an anomalous fetus with lissencephalic features. At autopsy, there were multiple intra-nuclear CMV inclusions in the brain and the kidneys. This case is presented for its rarity and for the documentation of the tissue localization of CMV inclusions at autopsy.

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Cutaneous nocardiosis is a rare disease, only a few cases of which have been reported from the world as well as in India. This infection, when in the lymphocutaneous form, may clinically resemble sporotrichosis, hence causing a diagnostic dilemma. Here, we report a case of primary cutaneous, sporotrichoid pattern of cutaneous nocardiosis caused by Nocardia asteroides in immunocompetent host. The patient was a 32-year-old farmer, with no predisposing factors, who presented with cutaneous nocardiosis. The diagnosis was confirmed by culture of the biopsy, after which the patient was treated successfully with antibacterial agents.

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A 24-year-old female presented with swelling in the left breast for one-and-a-half years associated with pain for last 4 months. During this period, she was operated twice and once again there was local recurrence, the biopsy was interpreted as benign vascular lesion. The case was diagnosed by preoperative cytology as angiosarcoma of breast, after which, she underwent modified radical mastectomy. Angiosarcoma of breast is uncommon with extremely bad prognosis. Familiarity with the clinical and pathologic features is critical in avoiding underdiagnosis and delayed treatment.

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Genomic variations in HIV-1 represent a major problem in understanding disease progression, studying drug resistance and developing effective vaccines. Heteroduplex Mobility Assay (HMA) was used for analyzing HIV-1 subtypes resulting from genetic similarity or divergence of C2 -V3 -V5 region of envelope gene between HIV-1 strains obtained from clinical samples in a tertiary care center at Pune. DNA from the PBMCs of infected individuals was amplified by nested PCR. Heteroduplexes were then formed by denaturing DNA from the unknowns with DNA from the reference strains. The results were analyzed by polyacrylamide gel electrophoresis. Out of 177 samples analyzed, 170 were of subtype C (96%). Four samples were found to be of subtype B (2.2%); in three samples, no definitive assignment of subtype was possible by HMA and these perhaps could be circulating recombinant forms (CRFs) of HIV-1. These findings may have significant implications toward development of a candidate vaccine for India.

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Soft tissue neoplasms of breast thought to be derived from Myofibroblasts have been classified as myofibroblastomas. Myofibroblasts are spindle shaped mesenchymal cells derived from fibroblasts. These are rare neoplasms (more often seen in the male breast) and have same structural and immunohistochemical characteristics as those of solitary fibrous tumors. We present a case of an adult female presenting as firm breast lump diagnosed as myofibroblastoma and confirmed by diffuse positivity of CD34 immunohistochemical stain.

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Mesangioproliferative glomerulonephritis (MesPGN) consists 10% of the total renal biopsy of glomerulonephritis. Aim of the present study was to find out clinicopathological changes in MesPGN and differences between diffuse and focal variety. MesPGN was seen mostly in young adults with mean age of 28.63 years for males and 26.3 years for females. Male predominance was noted (M:F ratio - 1.4:1). About 70.83% patient presented with edema feet, followed by hypertension (29.19%), fever (16.66%), oliguria, nausea and vomiting (10.41%). Urine analysis in 50 patients revealed that 70% patients presented with nephrotic-range proteinuria, 36% patients with microscopic hematuria and 56% patients with leukocyturia. Statistically, no significant difference was found in clinical features of diffuse and focal MesPGN. Microscopic comparison between diffuse and focal variety showed that significant increase of focal glomerular basement membrane thickening, focal endothelial cell proliferation, focal smooth muscle hyperplasia, hyaline sclerosis and vasculitis was more common in diffuse variety. In focal variety, Capillary loop congestion, periglomerulitis, cloudy swelling and vacuolar degeneration in tubules were significantly more as compared to diffuse variety. Details of the clinical features, special laboratory tests and histological details revealed that diffuse variety had systemic diseases, which included Wegner's granulomatosis, microscopic polyangitis, Henoch's schonlein purpura, systemic lupus erythematosus (two cases) and one case each of Kimura's disease, pyelonephritis and tuberculosis. Only one case of focal MesPGN showed tuberculosis. Thus, our study concludes that MesPGN is an important cause of nephrotic syndrome among young adults. Secondly, search for some other diseases should be made and thirdly, if biopsy shows focal mesangial cell proliferations in minimal change glomerulonephritis (MCGN), it should be diagnosed as focal MesPGN rather than MCGN because these cases show recurrences.

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Atypical teratoid /rhabdoid tumor (AT/RT) of the central nervous system is a rare but highly aggressive neoplasm that usually affects young children and infants and follows a rapidly fatal course. We report a case of AT/RT in a 3-month-old male infant who also had coincidental unilateral congenital cataract even though there was no associated congenital infectious disease.

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Calcifying epithelial odontogenic tumor (CEOT) is a rare, benign odontogenic tumor. It constitutes 0.4-3% of all odontogenic tumors. There is only a single case, which has been reported in the Indian literature that too in cytology. Microscopically, these are composed of large sheets of epithelial cells, amorphous amyloid-like material and calcification. Although these lesions are benign, they can be locally aggressive, but malignant transformation and metastasis is rare. Considering its locally aggressive nature, appropriate management and long-term follow-up is recommended. We describe two cases of CEOT involving the hard palate and leading to facial alterations.

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Focal calcifications are frequently seen in renal masses including renal cell carcinoma (RCC). Osseous metaplasia, on the other hand, is a rare finding in RCC. We report a case of RCC with radiological evidence of speckled calcification that showed osseous metaplasia on histopathological examination. The clinical and pathologic differential diagnosis for this tumor is discussed along with a review of the literature on this unusual phenomenon.

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Background: In the present study, we have evaluated the use of electron microscopy in subtyping pulmonary adenocarcinomas, comparing the ultrastructural findings with the diagnosis rendered by light microscopy. Materials and Methods: The gross and histologic features of 16 autopsy cases of pulmonary adenocarcinoma were analyzed and compared with electron microscopic features. The cytologic phenotypes of these cases of well-differentiated pulmonary adenocarcinoma were determined by electron microscopic examination. More than 200 cells in each case were examined, and the tumors were classified according to the predominant feature noted. Results: Eight cases were of Clara cell origin and one case each of type II pneumocyte and bronchial surface cell type. The remaining 6 cases lacked definite discernible features of differentiation towards any specific cell type, other than presence of small nuclear clefts in occasional nuclei. Tumors with Clara cell differentiation were low cuboidal with apical snouts. Type II pneumocyte tumor failed to reveal any characteristic definable as light microscopic feature. Conclusion: Ultrastructural examination is the only definite means of identification of various cell types in the respiratory epithelium and hence forms an invaluable tool in classification of pulmonary adenocarcinoma.

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A 60-year female was presented with swelling in the left inguinal region. Microscopically, the left inguinal lymph node shows typical "amianthoid" fibers (hyalinized areas), spindle cell fascicles and hemorrhagic areas in the interstitial spaces with rim of lymphoid tissue. Preoperatively, patient was non-reactive for HIV I and II. This lesion is usually mistaken as neurilemmoma and Kaposi's sarcoma.

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We report a case of recurrent sino-nasal fungal infection due to Pseudallescheria boydii (P. boydii) in a 33-year-old diabetic woman. It is very essential to identify P. boydii, as Miconazole is the only antifungal drug of choice. However, histological examination of the specimen for clinching clues such as intercalary conidia and chlamydoconidia plays an important role in identifying P. boydii, when fungal culture fails to yield the growth. On follow-up, the woman responded for the treatment with Miconazole and is free of symptoms, with no recurrence after 6 months.

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Although carcinoid tumor is a relatively common neoplasm in surgical pathology, fine needle aspiration cytology (FNAC) as a method of primary diagnosis has only been reported a few times. We report the case of a 55-year-old male patient who presented with colicky pain in the abdomen and a vague mass in the right lumbar region. Ultrasonographic study showed an enlarged mesenteric lymph node. Ultrasonography-guided FNAC revealed cellular smears with neuroendocrine cellular arrangement and morphology. The cytomorphologic characteristics of carcinoid tumors are distinctive enough for diagnosis. A diagnosis of metastatic carcinoid was given. 5-hydroxyindolacetic acid in 24-hour urine turned out to be high. Histopathology and immunohistochemistry studies also confirmed the diagnosis. Thus, FNAC can be a useful and safe tool in the diagnosis of carcinoid tumors.

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Most persons with parvovirus B19 infection are asymptomatic or exhibit mild, nonspecific, cold-like symptoms. However, hematologic problems associated with the infection include transient aplastic crisis, chronic red cell aplasia, mild neutropenia and thrombocytopenia. A rare hematologic manifestation is in the form of dyserythropoeisis. Herein, we present the case of a 9-year-old female with severe dyserythropoeisis associated with parvovirus infection.

[ABSTRACT]  [FULL TEXT]  [PDF]  [PubMed]

[FULL TEXT]  [PDF]  [PubMed]

[FULL TEXT]  [PDF]  [PubMed]

[FULL TEXT]  [PDF]  [PubMed]

[FULL TEXT]  [PDF]  [PubMed]

Viable protoscolices of Echinococcus granulosus injected into Swiss-albino mice by two different routes, viz. intraperitoneal and subcutaneous and in two different concentrations of 2000 and 1000 scolices, to observe the development of cysts have shown that subcutaneous route of infecting a mouse model is superior because of its low infecting dose and longer survival period of mouse. This finding should be helpful in experiments to observe the effect of drugs for the treatment of hydatidosis, in vivo, without the need of killing the mouse.

[ABSTRACT]  [FULL TEXT]  [PDF]  [PubMed]