Published online Mar 21, 2015. doi: 10.3748/wjg.v21.i11.3435
Peer-review started: July 25, 2014
First decision: August 15, 2014
Revised: September 21, 2014
Accepted: November 11, 2014
Article in press: November 11, 2014
Published online: March 21, 2015
We report a patient with small intestinal metastasis from lung squamous cell carcinoma. A 66-year-old man who underwent radical lung cancer surgery was admitted to our hospital. Before starting his fifth cycle of chemotherapy, he was found to have a positive fecal occult blood test. Abdominal computed tomography scan revealed an ileal tumor with mesenteric lymph node enlargement. He underwent laparoscopic resection of the involved small intestine and mesentery. Histopathological analysis confirmed metastasis from lung cancer. We conducted a review of the literature and 64 documented cases of small intestinal metastasis from lung cancer were found. The pathologic diagnosis, clinical presentation, site of metastasis, and survival time in these cases were reviewed.
Core tip: Gastrointestinal tract metastases from lung cancer are relatively rare. We describe a patient with melena due to small intestinal metastasis from lung squamous cell carcinoma. We collected 64 similar documented cases from 2000 to date, and reviewed the pathologic diagnosis, clinical presentation, site of metastasis, treatment, and survival time.