We report three cases of mucin-producing carcinoma of the gallbladder, along with the magnetic resonance (MR) findings, especially the findings on a MR cholangiopancreatography. In our cases, linear or curvilinear streaks were detected running along the long axis of an enlarged gallbladder (mucus thread sign). When such findings were seen, a mucin-producing carcinoma of the gallbladder should be included as a differential diagnosis. Thus, gadolinium-enhanced MR imaging is mandatory for the precise diagnosis of the mucin-producing carcinoma of the gallbladder.
Adenocarcinoma, Mucinous/*diagnosis/pathology/surgery ; *Cholangiopancreatography, Magnetic Resonance ; Cholecystectomy ; Contrast Media/diagnostic use ; Diagnosis, Differential ; Fatal Outcome ; Female ; Gadolinium DTPA/diagnostic use ; Gallbladder Neoplasms/*diagnosis/pathology/surgery ; Humans ; Male ; Middle Aged