- Etiology: twisting of ovary causing decreased arterial flow (but ovary has dual blood supply from ovarian + uterine arteries), lead point can be a variety of masses
- US: enlarged ovary (often > 4 cm in size) with multiple peripheral follicles, marked asymmetry in size (on average 12 times larger) between the torsed ovary and the normal ovary is most sensitive finding, lead point of torsion can make stroma challenging to visualize, ovary is in an abnormal location (midline of pelvis, superior to uterus, anterior or posterior), can see arterial flow to torsed ovary in 66% of patients
- Clinical: large ovarian cysts / tumors are predisposing factor for torsion, can present acutely with pain and nausea and vomiting or indolently with weeks of intermittent pelvic pain
Radiology Cases of Ovarian Torsion


Surgery Cases of Ovarian Torsion



Gross Pathology of Ovarian Torsion

