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KMID : 1103720070570060525
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Journal of the Korean Society of Radiology
2007 Volume.57 No. 6 p.525 ~ p.531
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A Clue for the Diagnosis of Lung Cancer Looking Lobar Consolidation with Emphasis on Thickness and Enhancement Pattern of Bronchial Wall on CT.
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Yoo Ho-Seok
Kwon Woo-Cheol
Cha Seung-Hwan
Kim Sang-Ha
Koh Sang-Baek
Kim Myung-Soon
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Abstract
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Purpose:To differentiate between lung cancer and pneumonia for cases of lobar consolidation, with an emphasis on the thickness and enhancement pattern of the bronchial wall viewed by a CT.
Materials and Methods: We retrospectively analyzed 17 patients with evidence of lobar consolidation, from a simple-chest radiograph, and divided them into groups by condition (lung cancer, n = 5; pneumonia, n = 12). CT scans were performed on all patients and bronchial wall thickness, which is the cranio-caudal length of the bronchial wall thickness and the enhancement pattern, were measured and analyzed at the mediastinal window setting.
Results:The thickness of the bronchial wall in the lung cancer group (2.46+/-0.37 mm) was significantly greater than the pneumonia group (1.73+/-0.36 mm) (p = 0.002). Moreover, the bronchial wall thickness was greater than 2.0 mm for all patients in the cancer group. Further, if a diagnostic criterion was set to be larger than 2.0 mm, 100% sensitivity and 66.7% specificity would be achieved for the study subjects. The cranio-caudal length of the bronchial wall thickness in the cancer group was 37.5+/-16.4 mm, which was significantly greater than the pneumonia group (16.3+/-6.6 mm) (p = 0.001). We found no significant difference for the degree of contrast enhancement between the two groups.
Conclusion:A CT scan measurement of the bronchial wall thickness greater than 2 mm in CT scans can be an indicator for diagnosing lung cancer in patients with lobar consolidation
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KEYWORD
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Lung neoplasms, Inflammation, Tomography, X-ray computed, Bronchi
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