Most develop within one year of transplantation. Diagnosis can be confirmed by needle aspiration which shows a creatinine level equivalent to serum.
Percutaneous drainage is useful to alleviate obstruction prior to marsupialization.
Ultrasound guided percutaneous lymphocoele drainage. The surgeon could not find the collection. Using a tandem approach, a 6.7 Fr McGahan catheter was advanced and coiled in the lymphocoele cavity. After 24 hours of drainage, the lymphocoele cavity was filled with methylene blue, allowing the surgeon to easily identify the collection at laparoscopy. While most are small and do not require additional therapy, haematomas may occasionally compress the ureter and produce hydronephrosis.