Differences in CT Findings According to Sputum Smear Results in Patients with Active Pulmonary Tuberculosis Having a Single Cavity / 결핵및호흡기질환
Tuberculosis and Respiratory Diseases
;
: 479-485, 2007.
Article
in Korean
| WPRIM
| ID: wpr-8712
ABSTRACT
Background:
The purpose of this study was to evaluate the differences in CT findings according to sputum smear- positive or -negative results in patients with active pulmonary tuberculosis having a single cavity.Methods:
A total of 32 patients with active pulmonary tuberculosis having a single cavity on CT were classified into two groups smear-positive (n=19) and smear-negative (n=13). The CT findings were reviewed retrospectively. The presence of consolidation, the number of lobes showing consolidation, ground-glass opacity, micronodules and nodule, the maximum diameter of the cavity, and the shape and maximum thickness of the cavity wall were assessed.Result:
The maximum diameter of the cavity was 33.84 +/- 13.65 mm and 27.08 +/- 9.04 mm in the smear-positive and -negative groups, respectively (p>0.05). The amount of consolidation and the number of lobes with consolidation were found to be 89.5% and 30.8% (p=0.01) and 1.37 +/- 0.90 and 0.31 +/- 0.48 (p=0.0002) in the smear-positive and -negative groups, respectively. Consolidations in two or more lobes were only noted in 31.6% of in the sputum smear- positive group (p< 0.05). There were no other significant differences between the two groups. The sensitivity, specificity, positive and negative predictive values for the presence of consolidation were 89.5%, 69.2%, 73.9%, and 81.8%, respectively.Conclusion:
While the absence of consolidation on CT may be associated with sputum smear-negative results in patients with active pulmonary tuberculosis having a single cavity, the presence of consolidation in two or more lobes on CT may be associated with spear-positive results in these patients.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Sputum
/
Tuberculosis, Pulmonary
/
Retrospective Studies
Type of study:
Diagnostic study
/
Observational study
/
Prognostic study
/
Risk factors
Limits:
Humans
Language:
Korean
Journal:
Tuberculosis and Respiratory Diseases
Year:
2007
Type:
Article
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