2021 Volume 57 Issue 5 Pages 866-872
A one-year-old girl was referred to our hospital with fever and convulsions. After the convulsions stopped, she was diagnosed as having febrile convulsions and admitted to the pediatric unit for fever work up. A suspicious splenic cyst was found by US, CT, and MRI as a cystic lesion of 7 cm diameter near her left kidney. Definitive surgery was performed laparoscopically, and the splenic origin of the cyst was confirmed. As a splenic preservative surgery, the ceiling of the cyst was excised with an ultrasonic coagulating device. The postoperative histopathological diagnosis was epithelial cyst. No relapse was seen for a year after the operation. We reviewed the case reports in Japan to evaluate the management of splenic cysts. In infants, large splenic cysts that can be symptomatic are rare, but treatment should be considered if they exceed 5 cm.