| Abstract: |
Beyond the typical acinar morphology observed in the majority of prostatic adenocarcinomas, a spectrum of morphologic variants and prostate cancer subtypes exists. These unusual entities may be classified as: (1) cancer morphologies arising by divergent differentiation of prostatic ductal, acinar, or basal cells and associated with unique clinical features and/or therapeutic approaches, and (2) histologies occurring in the context of usual prostatic adenocarcinoma that may result in diagnostic misinterpretation or difficulties in Gleason grade assignment, especially in limited samples. This article details a number of variants, with emphasis on diagnostic criteria, differential diagnoses, and clinical significance. Copyright © 2012 by Lippincott Williams & Wilkins. |
| Keywords: |
clinical feature; histopathology; review; squamous cell carcinoma; carcinoma, squamous cell; diagnostic accuracy; adenocarcinoma; prostate specific antigen; diagnosis, differential; differential diagnosis; tumor differentiation; adenocarcinoma, mucinous; cancer hormone therapy; neuroendocrine tumor; prostate cancer; gleason score; prostatic neoplasms; prostate; diagnostic error; sarcomatoid carcinoma; carcinoid; prostate adenocarcinoma; cancer classification; androgen deprivation therapy; signet ring carcinoma; carcinoma, signet ring cell; mucinous carcinoma; carcinoma, ductal; carcinoma, neuroendocrine; mucinous; neuroendocrine; variant; ductal; pattern; squamous; intraductal; neurosecretory cell; basaloid carcinoma; foamy pseudohyperplastic; foamy gland carcinoma; atrophic carcinoma; prostate carcinoid tumor; prostate ductal carcinoma; pseudohyperplastic carcinoma
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