Small Intestinal Neuroendocrine Tumor Presenting as Mechanical Bowel Obstruction in an Elderly Patient: A Case Report.

Gastrointestinal neuroendocrine tumors (NETs) are an uncommon malignancy that often goes undiagnosed until they cause significant symptoms. They are characterized by numerous NET markers, which are helpful for both diagnosing and monitoring treatment in these patients. In this case report, we present an 81-year-old woman with a three-week history of intermittent diffuse abdominal pain. An abdominal CT scan demonstrated abnormal abdominal wall thickening. Surgical resection confirmed a well-differentiated NET. This case report underscores the significance of clinical suspicion, diagnostic accuracy, and the vital role of surgical resection in preventing disease progression and severe complications.