Stridor secondary to a bronchogenic cyst in a neonate.

We present the case of a female neonate with expiratory stridor that was caused by a bronchogenic cyst that led to tracheobronchomalacia. Rigid endoscopy revealed that a severe anterior compression of the tracheobronchial tree had caused tracheomalacia and right bronchomalacia. Computed tomography of the chest with intravenous contrast demonstrated the presence of a mediastinal mass anterior to the trachea and bronchus.