Spleen Flashcards
What ultrasound finding is most characteristic of splenic torsion?
A. Multiple small hyperechoic foci with distal acoustic shadowing.
B. A diffusely enlarged spleen with lacy, hypoechoic parenchyma and lack of normal splenic venous flow.
C. Swiss cheese pattern
D. Small, round, hypoechoic nodules randomly scattered throughout the spleen.
B. A diffusely enlarged spleen with lacy, hypoechoic parenchyma and lack of normal splenic venous flow.
To know more:
The hilar perivenous hyperechoic triangle as a sign of acute splenic torsion in dogs
What is this image representing most likely?
a. Nodular hyperplasia
b. Hematomas
c Myelolipomas
d. Metastasis
c Myelolipomas
On ultrasound, splenic cysts and abscesses are:
A. Extremely common, typically appearing as uniformly hyperechoic nodules
B. Rare, and appear as fluid-filled cavities that can resemble cysts or abscesses in the liver
C. Impossible to differentiate from normal splenic parenchyma
D. Always associated with a hyperechoic rim and a target-like lesion
Splenic cysts and abscesses are rare and manifest as fluid-filled cavities of variable echogenicity, similar to hepatic cysts and abscesses.
Splenic infarcts on ultrasound commonly appear as:
A. Hyperechoic, irregular masses distorting the organ’s contour
B. Hypoechoic to anechoic areas with a lacy pattern, sharply demarcated, and decreased or absent blood flow
C. Brightly echogenic foci with acoustic shadowing
D. Fluid-filled cystic cavities always containing septations
Infarcts are hypoechoic to anechoic, sometimes with a lacy pattern, clearly demarcated from adjacent parenchyma, and show decreased or absent blood flow without necessarily distorting the organ’s normal contour.
Splenic vein thrombosis can be associated with:
A. Completely normal spleens and no underlying disease
B. Various conditions including neoplasia, steroid administration, inflammatory diseases, and coagulopathies
C. Only pancreatitis and no other disorders
D. Only benign nodular hyperplasia
Splenic vein thrombosis may be linked to neoplasia, exogenous corticosteroids, systemic inflammatory states, coagulopathies, pancreatitis, and immune-mediated disease.
According to the text, color and power Doppler ultrasound are:
A. Highly accurate in distinguishing benign from malignant splenic lesions
B. Unable to differentiate malignant from benign splenic lesions reliably
C. Irrelevant in the assessment of vascular involvement
D. Only useful for diagnosing cystic lesions
B. Color and power Doppler ultrasound cannot reliably differentiate between malignant and benign splenic lesions.
A perivenous hyperechoic triangle observed at the level of the splenic hilum on ultrasound can be associated with which of the following conditions?
A. Splenic torsion only
B. Massive splenic infarction only
C. Both splenic torsion and massive splenic infarction
D. Benign cystic lesion of the spleen
A perivenous hyperechoic triangle at the splenic hilum can be seen in splenic torsion and also in cases of massive splenic infarction due to conditions such as severe necrotic pancreatitis or complete venous thrombosis. The adjacent fat often appears hyperechoic as well
