IVC and Iliac Veins Flashcards
Which of the following vessels extends as the external iliac vein?
a. common iliac vein
b. great saphenous vein
c. common femoral vein
d. inferior vena cava
C
In well-hydrated patients, what is the mean diameter of the inferior vena cava at the level of the renal veins?
a. 17 to 20mm
b. 10 to 15mm
c. 2 to 3cm
d. 3 to 5cm
A
Where does the left-sided IVC in a duplicate system typically terminate?
a. splenic vein
b. right renal vein
c. superior mesenteric vein
d. left renal vein
D - LRV
Upon ultrasound examination, the hepatic veins are noted to drain directly into the right atrium. What does this finding suggest?
a. normal findings in the hepatic veins
b. congenital absence of the inferior vena cava
c. membranous obstruction of the intrahepatic IVC
d. duplicate inferior vena cava syndrome
B
From a coronal plane in the left lateral decubitus position, what landmark can be used to identify the confluence of the common iliac veins to create the IVC?
a. superior pole of the right kidney
b. left lobe of the liver
c. inferior pole of the right kidney
d. inferior pole of the left kidney
C
What is the most common pathologic finding in the IVC and iliac veins?
a. tumor extension from renal cell carcinoma
b. thrombus extension from deep venous thrombosis in the legs
c. isolated thrombosis of the IVC
d. venous dissection through the iliac veins
B
Newly formed thrombus appears virtually _______________, whereas more advanced thrombus appears _______________.
a. hyperechoic, anechoic
b. hyperechoic, hypoechoic
c. hypoechoic, hypoechoic
d. anechoic, hyperechoic
D
From what do intraluminal tumors in the inferior vena cava most commonly arise?
a. pancreatic carcinoma
b. colon carcinoma
c. renal cell carcinoma
d. bladder carcinoma
C
In what ways can color-flow Doppler be particularly useful in identifying tissue bruits and pulsatile flow?
a. filter perforation
b. deep venous thrombosis
c. tumor extension
d. aortocaval fistula
D
During spectral Doppler analysis of the iliac system, continuous flow is noted in the common iliac veins bilaterally. What does this finding suggest?
a. obstruction in the common iliac veins
b. obstruction in the common femoral veins
c. obstruction in the inferior vena cava
d. normal findings in the common iliac veins
C - continuous flow will be seen DISTAL to an obstruction (common iliac veins are distal to the IVC)
What is the condition that occurs when the left common iliac vein is compressed between the overlying right common iliac artery and underlying vertebral body?
a. May–Thurner’s syndrome
b. Raynaud’s syndrome
c. arcuate ligament syndrome
d. Paget–Schroetter’s syndrome
A
What is filter placement in the inferior vena cava designed to prevent?
a. thrombus extension from the lower extremities
b. pulmonary embolus
c. thrombus extension from the intrahepatics
d. inferior vena cava tumor extension from the renal veins
B
Which of the following is a dependable marker for ultrasound identification of the level of the renal veins for IVC filter placement?
a. superior mesenteric artery
b. superior mesenteric vein
c. left renal vein
d. right renal artery
D - RRA
On sonographic evaluation, which of the following describes the appearance of an IVC filter?
a. hypoechoic, circular rings within the IVC lumen
b. hyperechoic, circular rings within the IVC lumen
c. echogenic lines that converge to a point d. hypoechoic lines that converge to a point
C
What veins are the pelvic viscera and musculature are drained by?
Internal iliac veins
What diameter is considered mega-cava?
> 28mm
An IVC filter is typically placed where in relation the the renal veins?
Distal