Late 'spontaneous' kidney graft decapsulation with fluid collection: lymphocele or transudate?

collection, and secondly to drain the collection.Surgical exploration showed that the collection wasThe common aetiologies of perirenal fluid collections strictly subcapsular. Marsupialization, i.e. creation ofoccurring after kidney transplantation include urin- a peritoneal window adjacent to the transplantedomas, haematomas, abscesses, and lymphoceles [1]. kidney, was therefore carried out to allow drainage ofThese complications generally occur early after trans- the collection into the peritoneum. Transplant biopsyplantation and their causes are well defined. However, showed a normal kidney on microscopic examination.another possible cause of a lymphocele-like fluid collec- Eleven years later, there has been no recurrence andtion may be observed: fluid leakage from kidney surface renal function remains unchanged (S-creatinine=after decapsulation. We report two cases of such late 1.3 mg/dl).subcapsular collections occurring in kidney transplant