Transvaginal US shows deep endometriosis nodules in the rectosigmoid colon. (IMAGE)

Radiological Society of North America

Transvaginal US shows deep endometriosis nodules in the rectosigmoid colon.

Caption

Transvaginal US shows deep endometriosis (DE) nodules (N) in the rectosigmoid colon. (A) Image in a 31-year-old patient with dyschezia shows an elliptical DE with tapering ends (arrows), longitudinal posterior fornix. (B) Transverse image of nodule in A, posterior fornix. (C) Image in a 27-year-old patient with chronic pelvic pain shows an Ω-shaped DE nodule in midrectum, longitudinal posterior fornix (arrows). (D) Image in a 33-year-old patient with deep dyspareunia shows a C-shaped nodule in midrectum, longitudinal anterior fornix (arrows). (E) Image in a 40-year-old patient with chronic pelvic pain shows tandem nodules of rectosigmoid colon with tapering ends (arrows), longitudinal posterior fornix. These are category A (ie, direct endometriosis) observations.

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Radiological Society of North America

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