mesonephroma

Pronunciation: mez′ō-ne-frō′mă

Definition: Obsolete term for a relatively rare malignant neoplasm of the ovary and corpus uteri, thought to originate in mesonephric structures that become misplaced in ovarian tissue during embryonic development; characterized by a tubular pattern, with focal proliferation of epithelial cells with clear cytoplasm or of the hob-nail type; so-called glomeruloid structures are reported, small convolutions or tufts of tiny tubate formations with capillaries extending into the spaces.

Synonym(s): clear cell carcinoma, mesonephric adenocarcinoma, mesonephroid tumor, wolffian duct carcinoma

[mesonephros + -oma, tumor]

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