Concentric, focal thickening of the gut walls may present sonographically as the "pseudokidney" or "doughnut" sign in all of the following abnormalities, except

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Concentric, focal thickening of the gut walls, which presents sonographically as a hypoechoic rim, a homogeneous thickness, and a central echogenic area that is tubular shaped longitudinally ("pseudokidney sign") and doughnut shaped ("doughnut sign") on transverse views, may be observed with inflammation, lymphoma, edema, neoplasm, and intussusception.

Concentric, Focal Thickening of the Gut Walls May Present Sonographically