Fig. 6.

Stimulated ovary with torsion diagnosed as stimulated ovary without torsion by initial MRI. Initial axial T2 weighted image (a) in a 30-year-old female with left lower quadrant pain at 25 weeks gestational age demonstrates a mildly enlarged mildly T2 bright left ovary (arrow). Axial T2 weighted image 5 days later (b) demonstrates interval enlargement of the left ovary with dark T2 signal (and bright T1 signal, not shown), consistent with hemorrhagic necrosis. The patient underwent left oophorectomy.