Case of the Week: Ovarian Torsion (Ultrasound)

What this episode covers

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. Click the YouTube Community tab or follow on social media for bonus teaching material posted throughout the week! Instagram: https://www.instagram.com/radiologistHQ/ Facebook: https://www.facebook.com/radiologistHeadQuarters/ Twitter: https://twitter.com/radiologistHQ

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