Renal Cyst after Heminephrectomy in a Pediatric Patient: Complication or Normality?

In this work, we present two cases of heminephrectomies with postoperative findings of cystic lesions in the bed of the excised renal segment.

Description of the clinical cases, therapeutic management and description of the ultrasound findings. A review of the published cases was carried out.

We present a case of open heminephrectomy due to atrophy of the upper hemirrenal in a case of ureterocele, and another case with bilateral lower heminephrectomy in a case of vesicoureteral reflux disease. In the first case, the cystic lesion disappeared during follow-up, while in the second, the cysts remained stable. In none of the cases published in the literature was it necessary to perform any intervention to resolve the cysts.

The appearance of cystic lesions in the heminephrectomy bed in pediatric patients is a radiological finding that occurs frequently. Due to its favorable evolution, without the need for additional procedures for its resolution, we do not consider the presence of these lesions as a complication after heminephrectomy.