INTRODUCTIONNeuroendocrine tumours (NETs) are tumours that commonly involve the gastrointestinal system. Common primary sites in the gastrointestinal system include the small intestine, appendix, rectum and pancreas. Mesenteric NETs are extremely rare entities and are sparsely reported in the literature.CASE HISTORYWe report the case of a 62-year-old woman with ectopic Cushing’s syndrome due to excessive adrenocorticotropic hormone secretion by a primary mesenteric tumour in the small intestine and its liver metastases.CONCLUSIONSAlthough rare, the mesentery can be a primary site for NETs. It can cause similar symptoms and require similar treatment options. Tumour resection and debulking are acceptable ways to improve both the survival and symptoms.
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