Late perirenal lymphocele causing ureteral and arterial obstruction in renal transplant patients.

The 3 cases reported herein reveal the problem of chronic lymphoceles in the transplant patient. Surgical correction of the obstruction to the renal artery or ureter is greatly facilitated by the recognition of this clinical entity and the use of intraoperative radiographic studies to distinguish these pseudoencapsulated cysts from the true renal pelvis. The use of sterile milk aids in the demonstration of the anastomotic patency of the watertight closure.