Indian Journal of Pathology and Microbiology
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Year : 2008  |  Volume : 51  |  Issue : 1  |  Page : 22-25

Gleason scoring of prostatic carcinoma: Impact of a web-based tutorial on inter- and intra-observer variability

Department of Anatomic Pathology, Apollo Hospitals, Jubilee Hills, Hyderabad, Andhra Pradesh, India

Correspondence Address:
S Gowrishankar
Department of Anatomic Pathology, Apollo Hospitals, Jubilee Hills, Hyderabad - 500 033, Andhra Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0377-4929.40385

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A total of 40 cases of prostatic adenocarcinomas were scored independently by four pathologists using the Gleason scoring system. After attending a web-based tutorial, the scoring was repeated by all. Consensus scores were obtained by simultaneous viewing of each case in a multihead microscope by all four pathologists. The scores were then compared. The pretutorial kappa (κ) values ranged from 0.36 to 0.64 with an average of 0.459. After the tutorial, the κ values ranged from 0.44 to 0.678 with the average κ value increasing to 0.538, thus indicating an improvement in the agreement. The intraobserver agreement ranged from 0.435 to 0.788. We conclude that web-based tutorials with emphasis on images developed by experts serve to achieve an uniformity in reporting.

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