Summary

Carcinoid tumours are uncommon well-differentiated neuroendocrine tumours. Primary duodenal carcinoids account for less than 2% of all gastrointestinal carcinoids. Duodenal carcinoids are seldom associated with carcinoid syndrome. We report a rare case of duodenal carcinoid presenting as a carcinoid syndrome in a middle-aged man with upper abdominal pain, hot flushes, diarrhoea and dry cough. Endoscopy-guided biopsy and 24 h urine 5-hydroxyindoleacetic acid (5-HIAA) proved the diagnosis. He was further evaluated and managed with definitive surgical treatment.