Surgery

In patients with previously unsuspected gallbladder cancer that is discovered in the surgical specimen after a routine gallbladder operation and confined to mucosa (T1), most disease is cured.[2,3] During laparoscopic removal of an unsuspected cancer, implantation of carcinoma at all port sites (including the camera site) is possible.[4] All port sites are typically excised completely, even for stage I cancers.

The need for reexploration for more extended resection in incidentally discovered T1b disease is controversial. A multicenter retrospective review identified lymph node metastases in 12% of patients who underwent re-resection after cholecystectomy, but there are no prospective data regarding relative outcome with a second surgery in these patients.[5][Level of evidence C2]

Patients with T2 or T3 disease have higher rates of unsuspected invasive disease at the time of diagnosis. A multicenter retrospective review was performed in patients who underwent re-resection after carcinoma was discovered incidentally. Residual disease was present in 57% of patients with T2 disease (including 31% with lymph node involvement and 10% with liver involvement) and in 77% of patients with T3 disease (including 46% with lymph node metastases and 36% with liver involvement).[5] On the basis of these observations, eligible patients may undergo reexploration to resect liver tissue near the gallbladder bed, portal lymph nodes, and lymphatic tissue in the hepatoduodenal ligament. Retrospective analyses suggest that extended re-resection can delay recurrences and potentially improve survival.[6-8][Level of evidence C2]

For patients with locoregional lymph node involvement (at the cystic duct, common bile duct, hepatic artery, and portal vein), long-term disease-free survival can occasionally be achieved with radical resection. In patients with jaundice (stage III or stage IV), preoperative percutaneous transhepatic biliary drainage for relief of biliary obstruction should be considered.

Surgery with curative intent is not considered possible in patients with metastatic spread beyond the locoregional lymph nodes or to distant organs.