KEY FACTS Imaging Unilateral or bilateral, round or oval, well-defined mass Variable echogenicity depending on stage of hemorrhage Variable appearance depending on age of hemorrhage US: Nonspecific, avascular hypoechoic, hyperechoic, or heterogeneous lesion CT/MR: Can better characterize hemorrhagic contents of…
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KEY FACTS Terminology Need for dialysis or failure of serum creatinine to halve in 1st week after transplantation You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a…
KEY FACTS Imaging No specific imaging characteristics Ultrasound-guided renal biopsy is gold standard Acute rejection (AR): Nonspecific allograft edema, urothelial thickening Resistive index (RI) may be elevated, or there may be loss or reversal of arterial diastolic flow Elevated RI…
KEY FACTS Terminology Contained rupture secondary to defect in artery wall You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Abnormal direct communication between artery and vein You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Imaging Enlarged, edematous, hypoechoic kidney due to outflow obstruction Absence or decreased color flow in renal vein at hilum Patent renal artery early, later renal artery will thrombose also High systolic arterial peaks with flow reversal in diastole…
KEY FACTS Terminology Occlusion of transplant renal artery secondary to thrombus You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Imaging Color, power, spectral Doppler US is screening modality for transplant renal artery stenosis Stenosis occurs most commonly at arterial anastomosis but can occur along length of artery Focal elevation of peak systolic velocity (PSV) > 250-300 cm/s…
KEY FACTS Imaging Dilated renal pelvis and calyces ± dilated ureter Distended bladder may cause functional obstruction or reflux resulting in hydronephrosis Low-level echoes within lumen suggest pus (pyonephrosis) or blood (hemonephrosis) Highly echogenic shadowing intraluminal structures represent stones, twinkling…