Usefulness of Chest CT in Colorectal Cancer Staging.
10.4174/jkss.2009.76.3.168
- Author:
Chang Ho LEE
1
;
Jong Hun KIM
;
Gong Yong JIN
;
Min Ro LEE
Author Information
1. Department of Surgery, Chonbuk National University Medical School, Jeonju, Korea. gsminro@chonbuk.ac.kr
- Publication Type:Original Article
- Keywords:
Chest CT;
Pulmonary metastasis;
Solitary pulmonary nodule
- MeSH:
Colorectal Neoplasms;
Follow-Up Studies;
Humans;
Liver;
Lung;
Neoplasm Metastasis;
Retrospective Studies;
Solitary Pulmonary Nodule;
Thorax
- From:Journal of the Korean Surgical Society
2009;76(3):168-172
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The lung represents the second most metastatic site after the liver in colorectal cancer (CRC). Traditionally, pulmonary metastasis has been evaluated by means of a chest X-ray. But, recently, chest computed tomography (CT) is increasingly being performed to detect pulmonary metastasis in CRC. This study was performed to evaluate the usefulness of chest CT over chest X-ray for early detection of pulmonary metastasis in preoperative staging in CRC. METHODS: We retrospectively reviewed 108 cases of CRC patients surgically treated with a curative intent at Chonbuk National University Hospital from April, 2007 to December, 2007. All evaluated by both chest X-ray and chest CT preoperatively. RESULTS: Five among 108 patients had metastatic lesions of the lung. Four of these 5 patients (80%) had a positive chest CT. But one of these 5 patients (20%) had a positive chest X-ray. Chest CT provided a sensitivity of 80% and a positive predictive value of 80% for the detection of metastatic lesions of the lung. In contrast, chest X-ray provided a sensitivity of 20% and a positive predictive value of 50% for the detection of metastatic lesion of the lung. Nine of these 108 patients (8%) were diagnosed with solitary pulmonary nodule (SPN) and one of them was confirmed to have metastatic lesion of the lung. CONCLUSION: There are isolated metastatic lung lesions without other organ involvement in CRC (4.6%). Chest CT is a more accurate imaging modality for detection of pulmonary metastasis in CRC. Also, we should carefully follow-up SPN detected by preoperative chest CT.
