NONINVASIVE OVARIAN-CARCINOMA

The subset of ovarian epithelial tumors that is morphologically carcinoma, but has not yet shown any stromal invasion, is discussed. It is emphasized that metastasis is a function of invasive tumors, and that the spread of a noninvasive lesion cannot be explained by the usual concepts of metastasis. The multicentricity of peritoneal origin of ovarian epithelial tumors is a far more likely reason for morbidity and mortality, and is inescapable when the ovaries contain no lesion, when they contain a lesion that is noninvasive, or when the ovaries have been surgically removed. © 1990 International Society of Gynecological Pathologists.