Endometrioid tumor
human disease
Endometrioid tumors are a class of tumors that arise in the uterus or ovaries that resemble endometrial glands on histology. They account for 80% of endometrial carcinomas and 20% of malignant ovarian tumors.
Ovary
Ovarian endometrioid tumors are part of the surface epithelial tumor group of ovarian neoplasms (10–20% of which are the endometrioid type).
Benign and borderline variants are rare, as the majority are malignant.
There is an association with endometriosis and concurrent primary endometrial carcinoma (endometrial cancer).
On gross pathological examination, the tumor is cystic and may be solid and some arise in cystic endometriosis. In 40% of cases, endometrioid tumors are found bilaterally.
Endometrium
Endometrioid carcinoma can also arise in the endometrium.
Grades 1 and 2 are considered "type 1" endometrial cancer, while grade 3 is considered "type 2".
Light microscopy
Light microscopy shows tubular glands, resembling endometrium.
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This entry incorporates text from “Endometrioid tumor” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.