CT Evaluation of Solitary Pulmonary Nodule: Value of Additional HRCT Scan.
10.3348/jkrs.1999.40.4.705
- Author:
Jeung Sook KIM
1
;
Jin Young KWAK
;
Seung Ik LEE
;
Doo Hoe HA
;
Tae Sung KIM
;
Jung Hwa HWANG
;
Yookyung KIM
;
Kyung Soo LEE
Author Information
1. Department of Diagnostic Radiology, Pundang CHA General Hospital, College of Medicine, Pochon CHA University, Korea.
- Publication Type:Comparative Study ; Original Article
- Keywords:
Lung, nodule;
Lung, CT;
Computed tomography (CT);
comparative studies
- MeSH:
Diagnosis;
Humans;
Solitary Pulmonary Nodule*;
Tomography, Spiral Computed;
Tomography, X-Ray Computed
- From:Journal of the Korean Radiological Society
1999;40(4):705-711
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The aim of our study was to evaluate the usefulness of high-resolution CT scans in addition tohelical CT for characterizing a solitary pulmonary nodule. MATERIALS AND METHODS: Our study included 49 patientswith a solitary pulmonary nodule ; in each patient this was evaluated by both additional high-resolution CT andhelical scanning. Images were evaluated by three independent observers, each of whom read them twice : initiallywith helical CT images only and then with helical images plus high-resolution CT images. After analysis, theobservers recorded the following : histologic diagnosis, benignancy or malignancy of a nodule, and confidence intheir diagnosis (three scales). RESULTS: In differentiating benign and malignant nodules, the accuracy of helicalscans only was 75% (110/147 readings) whereas that of helical plus high-resolution CT scans was 82% (121/147readings) (p=0.001). Correct histologic diagnosis was made in 47% of cases (69/147 readings) when helical scansonly had been evaluated and in 48% of cases (71/147 readings) for which both helical and high-resolotion CT scanswere available (p=0.815). Diagnosis was more often highly confident on the basis of additional high-resolution CTscans (25%) than helical scans only (5%) (p=0.001) . CONCLUSION: By enhancing differential diagnosticaccuracy between benign and malignant nodules and by increasing confidence in the histologic diagnosis of apulmonary nodule, additional high-resolution CT scans are valuable for the evaluation of a solitary pulmonarynodule.
