Type-2 submucosal posterior laryngeal cleft diagnosed on CT scan.

Posterior laryngeal cleft (PLC) is a rare developmental abnormality, which requires early diagnostic laryngoscopy and management if considerable morbidity and mortality are to be avoided. We report the case of a 25-year-old man with a life-long history of a weak, breathy voice, in whom the diagnosis of PLC was made by CT scanning. This is the first reported case of a PLC being diagnosed by CT scanning. Whilst direct laryngoscopy should remain the investigation of choice in congenital stridor, CT scanning may occasionally be useful.