Which of the following statement(s) is/are true concerning gallbladder polyps?

a.Sonographic findings of a gallbladder polyp include a filling defect which does not move with change in position

b.Benign gallbladder polyps can cause symptoms similar to those caused by gallstones

Benign gallbladder polyps cause symptoms similar to those caused by cholelithiasis. Biliary symptoms including right upper quadrant pain and discomfort, fatty food intolerance, nausea, vomiting, and an increase in flatulence are common complaints in patients with symptomatic benign gallbladder polyps. Gallbladder tumors, when diagnosed preoperatively, may be visualized by ultrasound, oral cholescintography, or less commonly, computed tomography. A filling defect that does not move with changes in position is probably a benign or malignant gallbladder polyp. Symptomatic patients who have lesions in the gallbladder should have a cholecystectomy. Since neither ultrasound nor cholecystography can distinguish benign from malignant lesions, all gallbladders that contain polypoid lesions should be removed.