atypical small acinar proliferation
Also found in: Acronyms.
atypical small acinar proliferation (prostate)A small prostate acinus or acini with abnormal or atypical glands that have insufficient cytological or architectural atypia for a definitive diagnosis of cancer. ASAPs are seen in ±5.5% of patients undergoing needle biopsies of the prostate, in whom cancer is identified in 40–50% on subsequent biopsy.
ASAP is probably best managed with active surveillance.