This is an unusual condition, more common in females and associated with gallstones (90%). It often presents with right upper quadrant pai...
This is an unusual condition, more common in females and associated with gallstones (90%). It often presents with right upper quadrant pain. It is associated with thickening of the smooth muscle of the gallbladder, causing mucosal folding.
US
• Bright reflections.
• Comet-tail artefacts from the gallbladder wall—due to the visualisation of cholesterol-filled hyperechoic sinuses (Rokitansky-Aschoff sinuses).
• Characterised by generalised or focal mural thickening with intramural diverticula.
• Main differential for focal thickening is gallbladder cancer.
MRI
• The string of beads sign is the hallmark and is highly specific in differentiating it from carcinoma (multiple foci of high signal within the wall of the gallbladder on T2).
Adenomyomatosis. Ultrasound image demonstrating comet tail artefacts from the superior gallbladder wall.
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