A 56-year-old female presents with glucose intolerance, gallbladder disease, and diarrhea.A large, malignant tumor was found in the head of the pancreas and was causing bile duct obstruction.What is the most probable type of tumor?

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Somatostatinomas usually occur in older adults (average age of onset of 50), and they are more common in women.The most common clinical features are nonspecific and include glucose intolerance, gallbladder disease, and diarrhea.Within the pancreas, the tumors are often large and malignant and predominantly arise in the head of the pancreas, where they may produce bile duct obstruction.

A 56-Year-Old Female Presents with Glucose Intolerance, Gallbladder Disease, and Diarrhea.A