title: Duodenal leiomyosarcoma presenting as a pulmonary lesion.
mesh_terms: D004379:Duodenal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D006801:Humans; D007890:Leiomyosarcoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis