Ultrasonic-pathologic classification of splenic abnormalities: gray-scale patterns.

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Abstract
In order to more specifically define splenic abnormalities with gray-scale ultrasound, a prospective study was performed involving 40 patients with splenomegaly and/or diseases of the spleen. The following sonographic patterns were found: uniform splenic sonodensity, equal to that of the liver (normal); uniform splenic sonodensity, less than that of the liver (low sonodensity); focal defect, more dense than adjacent spleen (sonodense); focal defect, less dense than adjacent spleen (sonolucent); and sonodense and sonolucent perisplenic defects. Each pattern was associated with certain pathologic categories, which formed a basis for the ultrasonic-pathologic classification of splenic disease. With the use of these patterns, a more specific diagnosis of splenic abnormalities may be made.

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