"Ultrasound Pictures Renal Vein Thrombosis"

Clinical manifestations Renal vein thrombosis: Acute flank pain, initially like that with renal colic; possible fever and chills. Laboratory tests show hematuria, proteinuria, and leukocytosis. Acute renal failure may occur in bilateral cases.

Occurrence Renal vein thrombosis: Most common in association with a tumor, nephrotic syndrome,
dehydration, pregnancy, oral contraceptive use, or trauma

Diagnosis Renal vein thrombosis:
x History, preexisting diseases
x Laboratory tests (urinalysis)
x CDS

Sonographic findings Renal vein thrombosis:
x The kidney is initially enlarged with a nonhomogeneous, predominantly hypoechoic rim of parenchyma. Later the kidney is diminished in size.
x Well-defined dilated veins, usually echogenic
x CDS: No detectable flow
x With left renal vein thrombosis, testicular congestion may be noted on the left
side in male patients.

"ULTRASOUND PICTURES" of Renal vein thrombosis. The renal parenchyma (K) is thickened and hypoechoic. The renal vein is dilated with high-level internal echoes extending to the inferior vena cava (VCI). GB = gallbladder with sludge.

Accuracy of sonographic diagnosis Renal vein thrombosis: With adequate visualization, there is no need for additional imaging modalities. Duplex sonography (e.g., in power mode) can distinguish a true thrombosis from venous occlusion by an infiltrating tumor and can detect vascularity in the tumor nodule. Angiography, venography, or CT may rarely be necessary in doubtful cases.

“ULTRASOUND PICTURES Renal vein thrombosis”

“Ultrasound upper abdominal pain”