Giant calyceal diverticulum with an extra-renal component: A case report.

Calyceal diverticula are urine-filled non-secretory cavities that result from outpouchings of the kidney's calyx or pelvis. These cavities lie in the renal parenchyma and are linked to the kidney's collecting system through a narrow channel. They are generally small in size and present without symptoms. Here, we report the case of a middle-aged patient who was diagnosed, following imaging exams, with a giant calyceal diverticulum presenting with an extra-renal component, a remarkably rare finding. The patient's condition was successfully treated through excision by laparoscopic surgery.