Corpus luteum with ovarian stromal edema is associated with pelvic pain and confusion for ovarian torsion

Abdominal Radiology
Douglas RogersAkram Shaaban

Abstract

To distinguish the corpus luteum with adjacent ovarian stromal edema as an entity associated with pelvic pain, with confounding ultrasound features that may lead to false-positive diagnosis of ovarian torsion. This is a blinded, retrospective study of 243 corpora lutea on transvaginal ultrasound. Imaging parameters included ovarian and corpus luteum volumes, central cystic space within the corpus luteum, vascularity around the corpus luteum, peripherally displaced follicles, and complex free fluid. Residual volume (ovarian volume minus corpus luteum volume) was used as a surrogate for ovarian stromal edema. Clinical parameters included age, pregnancy, and location/acuity of pain if present. Concern for ovarian torsion in radiology reports was documented. 51.0% (124/243) of patients presented with pain. Multivariate regression analysis of factors significantly associated with pain (including age, p = 0.001; larger corpus luteum volume, p = 0.002; larger residual volume, p < 0.001; complex free fluid, p = 0.002; and peripherally displaced follicles, p < 0.001) left only increased residual volume as significantly associated with pain [OR 1.02-1.16; p = 0.01]. False-positive concern for ovarian torsion on ultrasound was present in ...Continue Reading

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Citations

Mar 2, 2021·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Lori M StrachowskiMindy M Horrow

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