Association Between Tumor Size and Prognosis in Patients With Small Bowel adenocarcinoma-a SEER-based Study

The goal of this observational study is to learn about in small bowel adenocarcinoma patients. The main question it aims to answer is the association between tumor size and prognosis in patients with small bowel adenocarcinoma. Participants will be compared for the relationship between tumor size and prognosis.