Small Intestine Cancer

Definition

Small intestine cancer is a rare malignancy that forms in the tissues of the small bowel, the part of the digestive system between the stomach and large intestine. The main types include adenocarcinoma, carcinoid tumors, lymphoma, and sarcoma.

Characteristics

Symptoms are often vague and may include abdominal pain, weight loss, nausea, vomiting, anemia, or gastrointestinal bleeding. Because symptoms can mimic other digestive conditions, diagnosis is frequently delayed.

Diagnosis and Prognosis

Diagnosis involves imaging tests (CT, MRI, enteroscopy), blood work, and biopsy. Prognosis depends on the type, location, and stage of the tumor. Adenocarcinomas tend to have a poorer prognosis than other types, but early detection improves outcomes.

Treatment

Treatment typically involves surgery to remove the tumor. Chemotherapy, targeted therapy, radiation therapy, or immunotherapy may be used depending on the tumor type and stage. Management often requires a multidisciplinary approach.

Last Revised: 12 May , 2025