Adenocarcinoma of small bowel is a rare entity. Its diagnosis can be challenging because of lack of symptoms or non-specific symptoms (abdominal pain, nauseas, vomits. etc.). When intestinal obstruction or upper digestive haemorrhage occurs they are in advanced stage. They incidence has increased in the last years, probably due to the development in imaging techniques, including capsule endoscopy. A 67-year-old man with medical history of anemia was admitted to our center. Colonoscopy and gastroscopy did not reveal any alteration. Capsule endoscopy demonstrated a tumor placed on proximal jejunum. Computed tomography showed enlarged lymphatic nodes and solid lesions in liver. Oncological intestinal resection with lymphadenectomy was performed and histological study reported a mucinous adenocarcinoma of small bowel with metastasis in nodes (T3N2M1). Adenocarcinomas of small bowel are uncommon tumours that require surgical treatment. Most of them are in advanced stages when symptoms are evident. On the contrary, in early stages they remain silent and diagnosed is frequently delayed.