Atypical polypoid adenomyoma
Micrograph of an atypical polypoid adenomyoma. H&E stain.
Specialty	Pathology

Atypical polypoid adenomyoma (APA) is a rare 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.

• 
  Intermed. mag.
• 
  Very high mag.

• Adenomyoma
• Cervical cancer