Rare Surgical Management of Renal Lymphangiectasia: Marsupialization Into Peritoneal Cavity.

Renal lymphangiectasia is a rare condition resulting from miscommunication between renal and retroperitoneal lymphatic ducts, causing ductal dilatation and lymphatic fluid collection. In this report, we present this condition and highlight an uncommon management approach involving cyst marsupialization. A 24-year-old female presented with flank pain and lumbar tenderness. Ultrasonography revealed a fluid collection, further evaluated by contrast-enhanced CT, which provided additional details and ruled out urine as the source. Fluid analysis confirmed its lymphatic origin, leading to a diagnosis of renal lymphangiectasia. The condition was managed with marsupialization into the peritoneal cavity. At a one-year follow-up, the patient's symptoms had resolved, and ultrasonography showed that the kidney was decompressed with no fluid collection. This case of renal lymphangiectasia underscores its diagnostic challenges and sheds light on the rarely reported marsupialization technique, demonstrating its potential effectiveness and contributing to the growing literature on this rare condition.