Table 7 Investigations of the studied population

High-resolution CT chest with contrast

12

- Double aortic arch

1

- Aberrant right subclavian artery

2

- Consolidation of lung lobes

2

- Small lung volume and tracheal stenosis

1

- Right-sided aortic arch & aberrant left subclavian artery

1

- Absent right lung and right main bronchus

1

- Tracheal narrowing

2

- Free

2

CT pulmonary angiography

3

- Innominate artery compression of the trachea

1

- Aberrant right subclavian artery

1

- Free

1

Plain chest x-ray

6

- Pneumonia

6

Barium swallow

- GERD

2

Previous bronchoscopy

2

- Laryngeal cleft

1

- TEF

1

Laryngoscopy

- Laryngomalacia

2

Upper GI endoscopy

- Esophageal stenosis

1