Cystic Endometrial Hyperplasia.
Cystic endometrial hyperplasia may develop after chronic exposure to estrogens such as phytoestrogens or estrogenic implants. It may also be a sequela to chronic cystic follicular degeneration or granulosa cell tumors. In this slaughterhouse specimen, the right horn has been opened to show the hyperplastic endometrial cysts. Inspissated secretions were pulled from the lumen and are shown above the tract.
Drost M (1971)