Sclerotherapy using polidocanol foam for a giant splenic cyst

Nonparasitic splenic cysts often cause nonspecific symptoms such as pain or early satiety. As it is relatively rarer than hepatic cysts, no established treatment exists for splenic cysts. A 24-year-old woman with a complaint of abdominal discomfort was referred to our hospital. Computed tomography revealed an 11-cm diameter splenic cyst, thought to be the cause of her symptom. Sclerotherapy was performed using polidocanol foam, administered at a volume of 40 mL through a catheter, under local anesthesia. After 2 sessions, the cyst measured 5 cm in diameter, 3 months after the first treatment. Sclerotherapy using polidocanol foam can treat large splenic cysts. It can be performed using local anesthesia and a single puncture, reducing sclerosant use.