Incidental Paratracheal Air Cysts on Thoracic CT and Their Association with Chronic Inflammatory Lung Disease

Table 2

Cyst characteristics.

PACs ()
Right paratracheal	307 (98.7%)
Left paratracheal	3 (1.0%)
Both paratracheal	1 (0.3)
Multiple	42 (13.5%)
Communication	98 (31.5%)
Size (mm), mean ± SD	5.93 ± 0.21

Note. Data are presented as numbers (percentages) of patients.
SD = standard deviation.