Predictive Factors of Nonmalignant Pathological Diagnosis and Final Diagnosis of Ultrasound-Guided Cutting Biopsy for Peripheral Pulmonary Diseases

Table 1

Baseline characteristics of the study population (N = 470).

Characteristics	n/mean ± SD	(%)
Age (years)
Range	15–80
Mean ± SD	53.2 ± 14.0
Gender
Male	342	72.8
Female	128	27.2
Smoking history
Smoker	241	51.2
Nonsmoker	229	48.7
Lesion location 1
Left lung	212	45.1
Right lung	258	54.8
Lesion location 2
Upper lobe	180	38.2
Middle and lower lobe	290	61.2
Lesion size (mm)
Range	8–103
Mean ± SD	31.2 ± 16.2
Lesion type
Solid	348	74.0
Subsolid	122	25.9
Patient position
Supine	84	17.8
Lateral	152	32.3
Prone	234	49.7
Needle type (gage)
16	41	8.7
18	429	91.2
No. of tissue samplings
≤2	140	29.7
= 3	256	54.4
>3	74	15.7
Puncture angle
0°	106	22.5
15°	323	68.7
30°	16	3.4
Multiangle	25	5.3