Red degeneration of uterine fibroid

Discussion:

Red degeneration of uterine fibroid occurs secondary to obstruction of the draining vein at the periphery of the fibroid. It occurs commonly in pregnant women or women on oral contraceptive pills.

Radiological features include a peripheral rim of distinct low T2 signal and high T1 signal corresponding to subacute hemorrhage. The entire lesion shows no diffusion restriction nor enhancement, which indicates complete interruption of blood flow.

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