Atypical polypoid adenomyoma
Atypical polypoid adenomyoma is a rare benign tumour of the uterus.
Pathology
APAs are characterized by glands with abnormal shapes that: often have squamous metaplasia, and are surrounded by benign smooth muscle. Nuclear atypia, if present, is mild.The microscopic differential diagnosis includes endometrial carcinoma and endocervical adenocarcinoma.