has part has part characteristic of has modifier Laryngeal cleft Embryologically, the trachea and esophagus share a common lumen until they are separated by the development of the tracheoesophageal septum. Failure of this fusion and incomplete development of the tracheoesophageal septum may lead to congenital abnormalities such as isolatedlaryngeal cleft, tracheoesophageal fistula, and esophageal atresia, depending on the severity of the abnormality. Patients with laryngeal cleft may present with feeding difficulty, chronic cough, stridor, pneumonia or respiratory distress, depending on the size of the cleft. Abnormal larynx morphology cleft abnormal larynx