Small Bowel Bleeding From Lung Cancer Metastasis

An 83-year-old man with a diagnosis of metastatic lung adenocarcinoma presented with syncope, melena, and iron-deficiency anemia. Abdominal imaging showed jejunal thickening, and capsule endoscopy revealed an actively bleeding stricturing ulcerated mass. Exploratory laparotomy found a large unresectable mass involving the jejunum, histologically corresponding to a poorly differentiated lung adenocarcinoma. The patient died before undergoing further treatments. Small bowel bleeding from lung cancer metastasis is rare, and patient status frequently limits treatment options. This case highlights the life-threatening potential of small bowel metastasis from lung cancer and the importance of maintaining high clinical suspicion of unusual metastatic patterns.