History: 50 year old female with abdominal pain with an incidental finding.

Axial CT of the abdomen with oral and IV contrast shows focal thickening of the gallbladder wall (arrows).
Gallbladder Adenomyomatosis: Axial CT of the abdomen with oral and IV contrast shows focal thickening of the gallbladder wall (arrows).

Adenomyomatosis is focal gallbladder wall thickening secondary to hyperplastic smooth muscle proliferation and exaggeration of the Rokitansky-Aschoff sinuses. It is usually asymptomatic, incidental, and of little clinical importance. Cholecystectomy can be performed if patients are symptomatic.  The differential diagnosis includes adenomatous polyp, and much less likely in this case gallbladder carcinoma and chronic cholecystitis.

Read about the differential diagnosis of gallbladder wall thickening here.

2 responses to “Gallbladder Adenomyomatosis”

  1. […] causes such as gallbladder carcinoma, AIDS cholangiopathy, cholangitis, hyperplastic cholecystosis, adenomyomatosis, and porcelain […]

  2. […] would include other causes of gallbladder wall thickening. These include benign gallbladder polyps, adenomyomatosis, polypoid gallbladder carcinoma, and possibly tumefactive […]

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