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DOI:10.2214/AJR.08.1907
AJR 2009; 193:W197-W201
© American Roentgen Ray Society

Clinical Observations

Gastrointestinal Metastasis From Primary Lung Cancer: CT Findings and Clinicopathologic Features

So Yeon Kim1,2, Hyun Kwon Ha1, Sung Won Park1, Jun Kang3, Kyoung Won Kim1, Seung Soo Lee1, Seong Ho Park1 and Ah Young Kim1

1 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.
2 Present address: Department of Radiology, Seoul National University Bundang Hospital, Bundang, Korea.
3 Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.

OBJECTIVE. The purpose of this study was to evaluate retrospectively the CT findings and clinicopathologic features of gastrointestinal metastasis from lung cancer.

CONCLUSION. 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.

Keywords: CT • gastrointestinal tract • lung cancer • metastasis


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