The ovarian vein syndrome relates to entrapment of a ureter between a dilated ovarian vein and an adjacent anatomic structure. It is relatively rare and is much more frequent on the right side.

Risk factors:

(1) pregnancy

(2) other conditions associated with congestion of an ovarian vein

(3) aberrant course to an ovarian vein (malposition)


Clinical features:

(1) flank or lumbar pain

(2) renal colic

(3) recurrent episodes of pyelonephritis


Imaging findings:

(1) hydroureter with or without hydronephrosis, usually unilateral

(2) entrapment of the ureter between a dilated ovarian vein and a hard place

(2a) right side: external iliac artery

(2b) left side: psoas muscle

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