undifferentiated carcinoma of the ovary

Undifferentiated carcinoma of the ovary is a rare type of ovarian epithelial tumor. They account for ~ 4% of ovarian cancer .


With these tumors, cellular differentiation is not sufficient for the tumor to be categorized into serous, mucinous or other specified subtypes. Pure undifferentiated carcinomas are rare; most of these tumors are mixed, with areas of serous, glandular, or transitional cell differentiation.


All undifferentiated carcinomas are malignant. Most of these tumors are diagnosed at a late stage and have a poor outcome.

See also

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