Indian Journal of Pathology and Microbiology
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  Table of Contents    
Year : 2015  |  Volume : 58  |  Issue : 4  |  Page : 575
Quiz Answer page

1 Department of Pathology, M.L.N. Medical College, Allahabad, Uttar Pradesh, India
2 Anoop's Lab Private Ltd and Department of Pathology, M.L.N. Medical College, Allahabad, Uttar Pradesh, India

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Date of Web Publication4-Nov-2015

How to cite this article:
Nayak P, Singh PA, Misra V. Quiz Answer page. Indian J Pathol Microbiol 2015;58:575

How to cite this URL:
Nayak P, Singh PA, Misra V. Quiz Answer page. Indian J Pathol Microbiol [serial online] 2015 [cited 2022 Jul 7];58:575. Available from: https://www.ijpmonline.org/text.asp?2015/58/4/575/168892

1. A slice of enlarged spleen from a case of follicular lymphoma showing the cut surface studded with white coloured nodules due to expansion of white pulp follicles by infiltrating lymphoma cells., Similar picture can be seen in other indolent lymphomas like small lymphocytic lymphoma, Marginal zone lymphoma and Mantel cell lymphoma.[1]

2. Intravascular papillary endothelial hyperplasia (IPEH) is a benign, non-neoplastic intravascular lesion. It was first defined by Masson in 1923 and is also known as Masson's tumor. It was termed as IPEH by Clearkin and Enzinger in 1976.[2] IPEH lesions frequently develop in the extremities, including the head, neck, and body, but are most prominent in the digits and within blood vessels throughout the body. [2],[3] The primary histologic feature of IPEH is the formation of short, blunted papillary projections with a hyalinized core lined by hyperplastic endothelial cells without anaplasia, pleomorphism, or significantly elevated mitotic activity, unlike angiosarcomas. The proliferation is usually seen in the vascular lumen and associated with thrombotic or clot material. The differentiation from angiosarcoma is important. Benign IPEH lesions are completely cured by local excision, while angiosarcoma is a malignant tumor that is capable of metastasis and may not be fully eradicated by localized surgical removal.[3]

   References Top

Kumar V, Abbas AK, Aster JC.eds Robbins and Cotran Pathologic basis of Disease. 9thed south east Asia edition, Vol 1; Elsevier: New Delhi 2015pp594-5.  Back to cited text no. 1
Clearkin KP, Enzinger FM: Intravascular papillary endothelial hyperplasia. Arch Pathol Lab Med 1976, 100:441-444.  Back to cited text no. 2
Noyan Can Akdur, Melahat Donmez, Serap Gozel, Huseyin Ustun and Sema Hucumenoglu. Intravascular papillary endothelial hyperplasia: Histomorphological and immunohistochemical features.Diagnostic Pathology 2013, 8:167-69.  Back to cited text no. 3

Correspondence Address:
Dr. Premala Anthony Singh
Department of Pathology, M.L.N. Medical College, Allahabad - 211 001, Uttar Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0377-4929.168892

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