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Article type: Case Report Background: Neuroendocrine tumors (NETs) are reported to be responsible for about 2% of all malignancies of the gastrointestinal tract. They consist of several different tumors, which are emanated from the cells of the diffuse NE cell system. Carcinoids, which are also called carcinoid tumors, constitute the largest group of NE tumors with an incidence rate of about 2.5 per 100,000 people. Carcinoid tumors are distinct tumor subtypes arising from the diffuse endocrine system outside the pancreas and thyroid. This neoplasm originates from different sites, including appendix (30-45%), small bowel (25-35%), duodenum (2%), jejunum (7%), ileum (91%), multiple sites (15-35%), rectum (10-15%), caecum (5%), and stomach (0.5%). Primary jejunal carcinoid tumors are reported to be uncommon. Moreover, carcinoid tumors rarely presented with occult gastrointestinal bleeding. Case Report: This report presents a case of metastatic jejunal carcinoid tumor in a 64-year-old male presented with anemia and positive guaiac test without any symptoms of carcinoid syndrome. Conclusion: Primary jejunal carcinoid tumors are reported to be uncommon. Moreover, carcinoid tumors rarely presented with occult GI bleeding. Here, we report a case of jejunal carcinoid tumor with metastasis to the liver presented with anemia and positive guaiac test without any symptoms of carcinoid syndrome. Article History: Received: 17 November 2019 Revised: 22 December 2019 Accepted: 29 December 2019

Anemia as the only clinical presentation of metastatic jejunal carcinoid tumor: A case report with radiological and enteroscopic findings