Grabe M, Forsberg B
Eur Urol. 1986;12(1):69-70. doi: 10.1159/000472581.
A case of heavy hematuria after renal biopsy causing retention of blood clots and obstruction of the renal pelvis is reported. The blood clots were successfully lysed by retrograde ureteral instillation of crystalline trypsin (Trypure) without any signs of harmful effects on the renal parenchyma.