Endometriosis and ovarian cancer.

Vercellini, P; Parazzini, F; Bolis, G; Carinelli, S; Dindelli, M; Vendola, N; Luchini, L; Crosignani, P G · Am J Obstet Gynecol · 1993

case_control · Level III

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Abstract

In 556 patients undergoing surgery for ovarian cancers the frequency of endometriosis ranged from 3.6% to 5.6% in serous, mucinous, and miscellaneous neoplasms versus 26.3%, 21.1%, and 22.2%, respectively, in endometrioid, clear cell, and mixed subtypes; the differences were statistically significant (chi 2 heterogeneity 50.0, p < 0.001) and consistent in strata of age, parity, menopausal status, and disease stage.

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