Table 1.

Localizations of concurrent respiratory tract collapse in cases of pharyngeal collapse. Number cases with complete collapse noted in parenthesis. The respiratory tract is defined as the cervical trachea, intrathoracic trachea, and mainstem bronchi

Concurrent Respiratory Tract Collapse	Number of Cases (Complete Collapse)
No respiratory tract collapse	8 (6)
Cervical tracheal collapse	1 (1)
Intrathoracic tracheal collapse	0
Cervical and intrathoracic collapse	1 (1)
Mainstem bronchial collapse	3 (3)
Cervical and mainstem bronchial collapse	0
Intrathoracic and mainstem bronchial collapse	3 (2)
Cervical, intrathoracic and mainstem bronchial collapse	12 (7)