An incidental 12 mm polyp is found in the gallbladder. What is the next step?

An incidental 12 mm polyp is found in the gallbladder. What is the next step?

• A. Continue surveillance without intervention
• B. Laparoscopic cholecystectomy
• C. Endoscopic removal of the polyp
• D. Open cholecystectomy

Answer: (B)

The main concept here is that the risk of gallbladder cancer in polyps increases with size, so management hinges on how large the lesion is. Most incidental gallbladder polyps are benign, but once a polyp reaches about 1 centimeter in diameter, the chance of malignancy from gallbladder carcinoma rises enough that removing the gallbladder is recommended to both treat and obtain a definitive diagnosis. A 12 mm polyp is 1.2 cm, crossing that critical threshold. Therefore, surgical removal of the gallbladder is indicated to eliminate the lesion and to allow histopathologic evaluation. The preferred approach is laparoscopic cholecystectomy because it achieves removal with less morbidity and faster recovery than an open procedure, and it provides the tissue needed to confirm whether the polyp is benign or malignant. Endoscopic removal cannot address a gallbladder wall lesion effectively, since the gallbladder itself lies beyond the lumen that endoscopy typically reaches. Surveillance alone would risk missing an early cancer in a polyp of this size, so it is not the best option here.

The main concept here is that the risk of gallbladder cancer in polyps increases with size, so management hinges on how large the lesion is. Most incidental gallbladder polyps are benign, but once a polyp reaches about 1 centimeter in diameter, the chance of malignancy from gallbladder carcinoma rises enough that removing the gallbladder is recommended to both treat and obtain a definitive diagnosis.

A 12 mm polyp is 1.2 cm, crossing that critical threshold. Therefore, surgical removal of the gallbladder is indicated to eliminate the lesion and to allow histopathologic evaluation. The preferred approach is laparoscopic cholecystectomy because it achieves removal with less morbidity and faster recovery than an open procedure, and it provides the tissue needed to confirm whether the polyp is benign or malignant.

Endoscopic removal cannot address a gallbladder wall lesion effectively, since the gallbladder itself lies beyond the lumen that endoscopy typically reaches. Surveillance alone would risk missing an early cancer in a polyp of this size, so it is not the best option here.