Fig. 35.

A 30-year-old female patient presented to ER with acute-onset severe abdominal pain in the lower abdomen. US examination revealed an asymmetrically enlarged right ovary (not shown). a Axial plane T2-weighted MR image showed an asymmetrically enlarged right ovary (arrows) compared to its left counterpart (arrowheads). Diffuse stromal T2 hyperintensity due to parenchymal edema (asterisk), peripherally displaced ovarian follicles, T2 hypointense ovarian rim (arrows), and pelvic free fluid are other typical imaging findings for ovarian torsion. b Axial T1W fat-suppressed postcontrast image demonstrated diminished stromal contrast enhancement of the right ovary compared to the left one (arrows). Emergent surgical detorsion was performed immediately after this MR examination