Acute renal vein thrombosis in renal allografts: detection with duplex Doppler US.
Renal allograft recipients were routinely monitored by means of duplex Doppler ultrasound. In a 20-month survey period, four instances of acute renal vein thrombosis were detected among 75 patients. All episodes occurred within the first 3 postoperative days. The examinations disclosed peaked, abruptly dropping systolic frequency shifts and retrograde plateaulike frequency shifts during diastole at the level of the main renal artery and its proximal branches. A venous Doppler signal could not be recorded. The findings are interpreted as indicating renal impedance exceeding diastolic pressure with nonpropulsive blood flow within the arterial vasculature.
Reuther
G
G
Department of Radiology, University of Ulm, Federal Republic of Germany.
Wanjura
D
D
Bauer
H
H
D000208:Acute Disease; D006801:Humans; D016030:Kidney Transplantation; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011877:Radionuclide Imaging; D012082:Renal Veins / Q000473:pathology; D013927:Thrombosis / Q000175:diagnosis*; D014463:Ultrasonography