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HOME > J Korean Soc Coloproctol > Volume 20(3); 2004 > Article
Original Article
Is Routine Chest X-ray Useful in Detection of Pulmonary Metastases after Curative Resection for Colorectal Carcinoma?.
Yun, Seong Hyeon , Park, Sung Bae , Kang, Sin Jae , Park, Chi Min , Jeong, Keuk Won , Chang, Weon Young , Lee, Woo Yong , Chun, Ho Kyung
Journal of the Korean Society of Coloproctology 2004;20(3):169-175

1Department of Surgery, Samsung Medical Center, Sungkyunkawan University School of Medicine, Korea. hkchun@smc.samsung.co.kr
2Department of Surgery, Cheju National University College of Medicine, Korea.
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PURPOSE
This study was performed to evaluate the effectiveness of conventional chest radiography and abdominal CT for early detection of pulmonary metastases after curative surgery for colorectal cancer.
METHODS
We retrospectively reviewed 138 cases of pulmonary metastases from a group of colorectal-cancer patients, who were recruited from 1994 to 2002 at Samsung Medical Center, Sungkyunkwan University School of Medicine, and who had been surgically treated with a curative resection.
RESULTS
The detection rates for pulmonary metastases were 34.1% by conventional chest radiography, 50.0% by abdominal CT, and 15.9% by other means. For stage I and II tumors, conventional chest radiography was superior to abdominal CT (45.7% vs. 34.3%, P<0.05) for detecting pulmonary metastases. On the contrary, for stage III tumors, abdominal CT was superior to conventional chest radiography (55.3% vs. 30.1%, P<0.05). Compared with stage I and II, pulmonary metastases in stage III had a tendency to be more numerous, bilateral, and extra-pulmonary. They also had a low detection rate by conventional chest radiography and a higher detection rate by abdominal CT, and they were associated with poor survival.
CONCLUSIONS
Conventional chest radiography is no more useful in detecting early pulmonary metastases after curative colorectal surgery than abdominal CT, especially for stage III tumors. We propose the use of routine chest CT or extended abdominal CT for screening of occult lung metastases in stage III colorectal cancer patients.

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