Endometrioid carcinoma of the ovary

Endometrioid carcinoma of the ovary is a relatively uncommon malignant tumour of the ovary.

It is also known as endometrioid ovarian carcinoma, endometrioid adenocarcinoma of the ovary, and ovarian endometrioid adenocarcinoma.

General

• Associated with endometriosis, i.e. people with endometriosis are more likely to have 'em.

Gross

• Usually solid and cystic.

Image:

• Endometrioid carcinoma of the ovary (uchc.edu).

Microscopic

Features:

• Tubular glands.
  • Cribriform pattern common.
• May see mucinous secretion.
• May have squamous differentiation/squamous metaplasia (useful for differentiating from sex-cord stromal tumours and germ cell tumours). - very useful feature.

DDx:

• Sertoli-Leydig cell tumour - also has tubules.
• Serous carcinoma of the ovary.

See also

• Ovarian tumours.
• Endometrioid endometrial carcinoma.