RADIOLOGY: HEPATOBILIARY: Case# 33999: GB CANCER. 88 year old female with epigastric pain, nausea and vomiting. 1. Soft tissue mass lesion arising from the anterior wall of the gallbladder and extending into the gallbladder lumen. This has the appearance of a neoplasm, most likely a primary carcinoma of the gallbladder. Metastatic lesion or lymphoma are less likely considerations. There is no definite sonographic evidence of extension of the mass outside the gallbladder nor of regional adenopathy. 2. Bilateral renal cysts, with that in the left upper pole categorized as a Bosniak type II cyst.