Atypical small acinar proliferation

Last revised by Henry Knipe on 13 May 2016

Atypical small acinar proliferations (ASAP) are premalignant lesions of the prostate, which can be found in as many as 5% of prostate biopsies. They are suspicious glands without adequate histologic atypia to establish a definitive diagnosis of prostate cancer. Some studies showed that there is a ~40% chance of findings adenocarcinoma on follow up prostate biopsies.

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