Table 4 Characteristics of patients and lesions in diagnostic success and failure groups
Variable | Success (n = 24) | Failure (n = 6) | P value |
|---|---|---|---|
Patient characteristics | |||
Age, yr. (mean ± SD) | 66 ± 10 | 72 ± 10 | 0.2 |
Sex | 0.2 | ||
Male | 12 | 12 | |
Female | 12 | 12 | |
History of malignancy | 0.6 | ||
No | 9 | 2 | |
Yes | 15 | 4 | |
Clinical suspicion | 1 | ||
Infection | 7 | 2 | |
Cancer | 17 | 4 | |
Bronchoscopy before biopsy | 0.3 | ||
No | 17 | 6 | |
Yes | 7 | 0 | |
CT findings | |||
Emphysema | 0.1 | ||
Absent | 18 | 2 | |
Present | 6 | 4 | |
Distribution of consolidation | 0.7 | ||
Single lung | 13 | 4 | |
Bilateral | 11 | 2 | |
Ground glass component | 0.009 | ||
Absent | 5 | 5 | |
Present | 19 | 1 | |
Presence of cavitation | 0.6 | ||
Absent | 20 | 6 | |
Present | 4 | 0 | |
Hilar adenopathy | 0.6 | ||
Absent | 16 | 5 | |
Present | 8 | 1 | |
Mediastinal adenopathy | 1 | ||
Absent | 17 | 5 | |
Present | 7 | 1 | |
Pleural effusion | 0.2 | ||
Absent | 12 | 5 | |
Present | 12 | 1 | |
Procedure Characteristics | |||
Biopsy site | 0.07 | ||
Above the hilum | 9 | 5 | |
Below the hilum | 15 | 1 | |
Transversed aerated lung | 1 | ||
No | 21 | 5 | |
Yes | 3 | 1 | |
Area biopsied | 0.7 | ||
Edge | 13 | 4 | |
Center | 11 | 2 | |
Needle path, mm (mean ± SD) | 17 ± 1 | 14 ± 1 | 0.5 |
Hemoptysis | 1 | ||
No | 22 | 6 | |
Yes | 2 | 0 | |
Pneumothorax | 0.5 | ||
No | 22 | 5 | |
Yes | 2 | 1 | |
Samples obtained | 1 | ||
FNA only | 7 | 1 | |
FNA and core | 17 | 5 | |
Final diagnosisa | 0.02 | ||
Malignant | 19 | 1 | |
Benign | 5 | 4 | |