In urologic pathology,<unk> , is a collection of<unk>  prostatic glands, on prostate biopsy, whose significance is uncertain and cannot be determined to be benign or malignant.<unk> , generally, is not considered a pre-malignancy, or a carcinoma in situ; it is an expression of diagnostic uncertainty, and analogous to the diagnosis of ASCUS<unk>  squamous cells of undetermined significance) on the Pap test.
Atypical small acinar proliferation
Nodular regenerative hyperplasia
In situ lymphoid neoplasia
Pancreatic acinar metaplasia
Intranodal palisaded myofibroblastoma
Perifollicular mucinosis
Microglandular hyperplasia
Folliculosebaceous cystic hamartoma