Chest
Clinical Investigations: COPD/REHABThin-Section CT Detection of Emphysema Associated With Bronchiectasis and Correlation With Pulmonary Function Tests
Section snippets
Patients
We conducted a retrospective study. The patients included in this study were identified by using a computer-generated list of all thoracic thin-section CT studies performed at our institution from 1987 to 1993. All patients who were referred to our institution for suspicion of bronchiectasis had thin-section CT scans. CT scans of patients who were referred for bronchiectasis were obtained for reinterpretation by two radiologists. The medical records of these patients, including pulmonary
RESULTS
CT evidence of emphysema was noted in 41 of the 90 patients (45%). Among these 41 patients, emphysema was mainly localized in the same BP segments as bronchiectasis (score A, 76%; score B, 5%; score C, 19%; score D, 0%) (FIGURE 1, FIGURE 2, FIGURE 3).
Relation between the presence of emphysema and the extent of bronchiectasis was highly significant (χ2=32;p<10−5) and relation between the presence of emphysema and the severity of bronchiectasis was significant (χ2=17;p<10–3) (Table 2). There was
DISCUSSION
The use of high-resolution CT (HRCT) in the evaluation of bronchiectasis and emphysema, in vivo, has been clearly demonstrated.6, 8, 13 The comparison of preoperative thin-section CT and pathologic findings in resected specimens has demonstrated that thin-section CT depicts bronchiectasis in most of the cases.14 Because of its cross-sectional nature and its high-contrast resolution, HRCT has been proved to be the most accurate method available for detection of mild emphysema,8, 13, 15, 16 and
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revision accepted September 6.