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Appendiceal Neuroendocrine Tumor Presenting as Acute Appendicitis: A Case Report
Edgar A Flores García1, Hector A Lopez Villicaña2, Azael Lopez Lopez3
1Surgery, Hospital Nuevo Gómez Palacio, Gomez Palacio, MEX.
Cureus
|July 16, 2026
Summary
Appendiceal neuroendocrine tumors (NETs) are common but often missed preoperatively. This case shows a large NET mimicking appendicitis, emphasizing prompt surgical and pathological evaluation for good outcomes.
Area of Science:
- Gastroenterology
- Surgical Oncology
- Pathology
Background:
- Appendiceal neuroendocrine tumors (NETs), previously carcinoids, are the most frequent appendix neoplasms.
- NETs are often incidentally found post-appendectomy for suspected appendicitis due to similar symptoms.
- Preoperative diagnosis is rare as clinical signs often resemble inflammatory appendiceal conditions.
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