title: Gastrointestinal metastasis from primary lung cancer: CT findings and clinicopathologic features.
abstract: OBJECTIVE
  The purpose of this study was to evaluate retrospectively the CT findings and clinicopathologic features of gastrointestinal metastasis from lung cancer.
  
  
  CONCLUSIONS
  The most common histologic type of lung cancer among the patients in this study was squamous cell carcinoma (n = 12). The most common clinical presentation was abdominal pain (n = 15). A total of 31 lesions were visualized on CT scans, involving the stomach (n = 3), small bowel (n = 26), and colon (n = 2). The metastatic lesions were seen on CT scans as wall thickening in 14 cases, an intraluminal polypoid mass in 14 cases, and an exophytic mass in three cases. The lesions exhibited isoattenuation in 19 cases, hypoattenuation in seven cases, and hyperattenuation in five cases. Complications included intussusception in seven cases, perforation in six cases, and obstruction in four cases.
authors.affiliation: Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 388-1, Pungnap-2 dong, Songpa-ku, Seoul 138-736, Korea.
authors.forename: So Yeon
authors.initials: SY
authors.lastname: Kim
authors.forename: Hyun Kwon
authors.initials: HK
authors.lastname: Ha
authors.forename: Sung Won
authors.initials: SW
authors.lastname: Park
authors.forename: Jun
authors.initials: J
authors.lastname: Kang
authors.forename: Kyoung Won
authors.initials: KW
authors.lastname: Kim
authors.forename: Seung Soo
authors.initials: SS
authors.lastname: Lee
authors.forename: Seong Ho
authors.initials: SH
authors.lastname: Park
authors.forename: Ah Young
authors.initials: AY
authors.lastname: Kim
mesh_terms: D015746:Abdominal Pain / Q000000981:diagnostic imaging / Q000209:etiology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000150:complications / Q000000981:diagnostic imaging* / Q000556:secondary*; D003287:Contrast Media; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000556:secondary*; D006801:Humans; D007472:Iohexol / Q000031:analogs & derivatives; D008175:Lung Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media; D007472:Iohexol; C038192:iopromide