Case of the Week: Ovarian Torsion (Ultrasound)

Radiology Lectures | Radiologist Headquarters

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2+ y ago 3:57

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In this radiology lecture, we discuss the ultrasound appearance of ovarian torsion.

Key points include:

Rotation of ovarian vascular pedicle with obstruction to venous outflow and arterial inflow.
Enlarged, heterogenous ovary due to hemorrhage and edema.
Small peripheral cysts with “follicular ring” sign: Thick, hyperechoic rim surrounding follicles of torsed ovary.
Classically, absent vascular flow.
However, up to 60% of patients with torsion have normal color Doppler findings, and arterial flow may even be preserved!
Most common finding is decreased or absent venous flow.
Twisted vascular pedicle: Most definitive sign of torsion, present in up to 88% of patients.
“Whirlpool” sign: Flow within the twisted vascular pedicle.

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