Gallbladder cancer commonly occurs in females, and its causes may be related to chronic and long-term irritation from cholecystitis and gallstones. On a CT scan, based on the tumor's pathological classification and growth patterns, it can be divided into the following types: The first type is the infiltrative type, which is characterized by irregular thickening of the gallbladder wall, usually greater than 1 cm, with a rough edge, and significant enhancement is seen after contrast enhancement. The second type is the mass-forming type, which presents as a large soft tissue mass filling the gallbladder, also showing significant enhancement after injection of contrast agent. The third type is the nodular type, which presents as either single or multiple nodules that protrude into the gallbladder cavity, appearing papillary or cauliflower-like. The fourth type is the obstructive type, generally a tumor at the neck of the gallbladder, causing obstruction of the common bile duct.