Atypical polypoid adenomyoma

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Atypical polypoid adenomyoma
Classification and external resources
Atypical polypoid adenomyoma - high mag.jpg
Micrograph of an atypical polypoid adenomyoma. H&E stain.

Atypical polypoid adenomyoma, abbreviated APA, is a rare uncommon benign tumour of the uterus.[1]


APAs are characterized by glands with abnormal shapes that: (1) often have squamous metaplasia, and (2) are surrounded by benign smooth muscle.[1] Nuclear atypia, if present, is mild.

The microscopic differential diagnosis includes endometrial carcinoma and endocervical adenocarcinoma.

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  1. ^ a b Jakus, S.; Edmonds, P.; Dunton, C.; Holland, G. (Jan 2002). "Atypical polypoid adenomyoma mimicking cervical adenocarcinoma.". J Low Genit Tract Dis 6 (1): 33–8. doi:10.1046/j.1526-0976.2002.61007.x. PMID 17050990.