Small bowel neuroendocrine tumor presenting with chronic diarrhea and mesenteric ischemia: A case report

Gastrointestinal (GI) neuroendocrine tumors (NETs) are rare neoplasms originating from neuroendocrine cells within the digestive tract. Despite their rarity, their incidence is increasing, necessitating a better understanding of their presentation and management. In the present report, we present a case of duodenal bulb NET that caused chronic diarrhea and unintentional weight loss for 2 years before manifesting as acute mesenteric ischemia. This case sheds light on the diagnostic challenges associated with GI NETs, particularly in cases with nonspecific symptoms. In addition, it underscores the importance of prompt recognition and management, as evidenced by the progression of the patient to acute mesenteric ischemia.