Table 1.

Subject Demographics, Tumor Characteristics, and Procedural Information^a,b

Mean age (range), years	51±18.9 (18 to 93)
Sex
Male	171 (50.7)
Female	166 (49.3)
Site of tumor
Anterior	303 (89.9)
Middle	9 (2.7)
Posterior	25 (7.4)
Mean tumor size (range), mm	59.2±33.8 (10 to 180)
Tumor pathology
Benign	63 (18.7)
Primary mediastinal malignancy	26 (7.7)
Lymphoma	136 (40.4)
Metastatic	97 (28.8)
Nondiagnostic	15 (4.5)
Modality
CT	323 (95.5)
US	14 (4.5)
Route
Parasternal	267 (79.2)
Trans-sternal	22 (6.5)
Transpleural	19 (5.6)
Paraspinal	29 (8.6)
Mean (range) number of passes	5±2.5 (1 - 14)
Introducer needle
Yes	325 (96.4)
No	12 (3.6)
Gauge
16G	11 (3.3)
18G	236 (70.0)
20G	90 (26.7)

^aCT, computed tomography; US, ultrasound.

^bValues shown are n (%) or mean (range) as appropriate.