Mickey Mouse appearance

Last revised by Dr Matt A. Morgan on 22 Aug 2020

In medical imaging literature, a Mickey Mouse appearance has been given to imaging features that depict that of Mickey Mouse when viewed from the front. It has been described in the following:

  • anencephaly 2
  • progressive supranuclear palsy 1
  • synonymously with a finger in glove sign
  • the flared shape of the iliac wings on pelvic radiograph in Down syndrome
    1. at the groin: normal femoral artery bifurcation, with an enlarged and incompressible femoral vein characteristic of recent venous thrombosis 3
    2. Paget disease: if there is increased radiotracer uptake on the bone scan in the spinous process and pedicles
    3. the configuration of the portal triad in short axis on a biliary ultrasound scan, with the portal vein comprising Mickey's "head" and the common bile duct and hepatic artery as his right and left "ears", respectively 4
    4. Hutch diverticulum: in delayed contrast study (IVU/CT), the appearance of bilateral smooth, walled posterolateral outpouching from urinary bladder adjacent to the vesicoureteric junction bilaterally 5

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    Cases and figures

  • Case 1: progressive supranuclear palsy
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  • Case 2: progressive supranuclear palsy
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  • Case 3: Down syndrome: with "mickey mouse" pelvis
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  • Case 4: Hutch diverticulum
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  • Case 5: Mickey Mouse sign in Paget Disease
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