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Fig. 3B —False-positive case of gallbladder cancer in 51-year-old woman diagnosed as having chronic cholecystitis with phlegmon. Other area shows weakly enhancing thin inner layer (white arrow) and nonenhancing thick outer layer (black arrow), which is compatible with type 5 pattern suggesting acute cholecystitis. In this case, enhancement degree was similar to that of hepatic parenchyma, suggesting chronic inflammation rather than gallbladder cancer. This fact could be helpful in making correct diagnosis.