Endoscopic mucosa resection of a duodenum carcinoid tumor of 1.2 cm diameter: a case report

Carcinoid tumors of the duodenum are rare, and their natural history has not been defined. Duodenum carcinoid can present with various clinical symptoms. It is difficult to diagnose this disease. When duodenum carcinoid is smaller than 1.0 cm, it can be removed by endoscopy. When it is bigger than 1.0 cm, it should be surgically resected. We report a patient who presented with a duodenum carcinoid 1.2 cm in size. As the patient refused surgical resection, we gave him endoscopic mucosa resection. After one-year follow-up, the duodenum carcinoid was found to be completely resected, and the patient had no cancer metastasis.