Table 1.

Characteristics of patients

Patients	Age/Gender	Symptoms	Spirometry	Causes of symptoms
1.	17 y/Male	Exertional dyspnea	Intrathoracic airway obstruction	Tracheal compression from RSAA
2.	55 y/Male	Cough Dyspnea	Restriction	Lung Cancer
3.	44 y/Male	Dyspnea Dysphagia	Normal	Tracheal and esophageal compression from RSAA
4.	54 y/Female	Dyspnea Dysphagia	Restriction	Tracheal and esophageal compression from RSAA and Obesity
5.	52y/Male	Dyspnea	Obstruction	COPD
6.	35 y/Male	Chest pain	Normal	Non-specific upper airway infection
7.	27y/Male	Exertional dyspnea	Intrathoracic airway obstruction	Tracheal compression from RSAA
8.	53y/Male	Cough Dyspnea	Intrathoracic airway obstruction	Tracheal compression from RSAA
9.	86y/Male	Dyspnea Dysphagia	Intrathoracic airway obstruction	Tracheal and esophageal compression from RSAA
10.	48y/Male	Cough	Intrathoracic airway obstruction with “saw-tooth” sign	Tracheal compression from RSAA
11.	27y/Male	Cough	Normal	Non-specific upper airway infection
12.	60y/Female	Cough	Normal	Sinusitis
13.	25y/Male	Cough Dyspnea	Small airways obstruction	Bronchiolitis and sinusitis