Symptomatic perirenal serous cysts of müllerian origin mimicking renal cysts on CT.

Objective: Our aim was to describe the clinical presentation, CT appearance, and management of a series of symptomatic perirenal serous cysts of müllerian origin, confirmed by laparoscopic resection.

Conclusion: Perirenal serous cysts of müllerian origin are uncommon lesions that may present as large symptomatic perirenal cystic masses mimicking exophytic renal cysts on CT. Serous cyst of müllerian origin should be considered in the differential diagnosis when CT reveals a large solitary perirenal cyst in a woman with flank or abdominal pain or both. Laparoscopic resection may be an effective treatment of such cysts.