title: Small bowel perforation as the presenting symptom of squamous cell carcinoma of the lung.
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D007414:Intestinal Neoplasms / Q000556:secondary; D007416:Intestinal Perforation / Q000209:etiology*; D007421:Intestine, Small; D008175:Lung Neoplasms / Q000150:complications* / Q000175:diagnosis; D008297:Male