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On routine physical examination, an asymptomatic 63-year-old man was noted to have slightly elevated ALT. A CT scan showed a 2.7 x 1.9 x 2.2 cm, well-defined mass in the tail of the pancreas. Endocrine workup showed a slightly elevated gastrin (pt. was on a PPI for GERD) and a glucagon elevated to 158 on one sample. Tests for PPP, CEA, chromogrannin A and CA19-9 were normal.