Giant renal parapelvic cyst with pelvi-ureteric junction obstruction in an infant: challenges in diagnosis and laparoscopic management

Renal parapelvic cysts (RPC) have an incidence of approximately 1%–3% in the general population. However, they rarely present in children with only two cases reported in literature. RPC are often misdiagnosed as it is difficult to distinguish them from hydronephrosis on preoperative imaging. We report a case of an infant with a giant RPC with associated pelvi-ureteric junction obstruction, who was managed successfully with laparoscopic complete excision of RPC and dismembered pyeloplasty. In our report, we discuss the challenges faced in the diagnosis and surgical management of this unusual case.