Site

No. of patients

%

Right main bronchus

23

46

Left main bronchus

11

22

Trachea

6

12

Subglottis

4

8

Carina

2

4

Glottis

1

2

Glottis to subglottis

1

2

All sites

1

2

Undetermined (spontaneously coughed out)

1

2

Total

50

100