Cholelithiasis is paicularly seen in association with which of the following malignancy ?

Somatostatinoma produces somatostatin in excess. Most common tumor location is pancreas. >70 % are malignant. Cholelithiasis is seen in 65-90%. Other manifestations are diabetes and diarrhea. Reference: Table 350-2, Harrisons Principles of Internal Medicine, 18th Edition, Page 3057