Venous Thrombosis
l Occurs in up to 4% transplants
l Sx: acute pain 2° swelling of kidney, oliguria
in first week
l Causes: surgical difficulties, hypovolemia,
femoral/iliac vein thrombosis, compression
by collections
l US- absent venous flow, reversal of diastolic
flow in artery.  Kidney may be enlarged,
hypoechoic.