CEACAM5 and pancreatic neuroendocrine tumor: Endoscopic ultrasound showed no features suggesting malignancy, with aspirated citrine-colored fluid, carcinoembryonic antigen (CEA) < 1.8 ng/mL, amylase of 144 U/L, glucose of 102 mg/dL, and cytology positive for neuroendocrine tumor of the pancreas (pNET).