Urethral<unk>  is a narrowing<unk>  of the opening of the urethra at the external meatus , thus constricting the opening through which urine leaves the body from the urinary bladder.
Meatal stenosis
Nasal septum deviation
Laryngotracheal stenosis
Laryngomalacia
Subglottic stenosis
Perforated eardrum
Hiatal hernia
Velopharyngeal insufficiency