[Validity of videolaryngoscopy in detecting laryngeal structural changes].
OBJECTIVE
To determinate the validity of videolaryngoscopy on diagnose of laryngeal diseases versus other laryngoscopic methods.


METHODS
Retrospective study covering 2 years (1992 and 1993).


METHODS
267 were the consulting patients because of dysphony. This collective was ranged in 2 groups. Group A included those hoarse individuals in whom was detected a growth, confirmed afterwards by means of direct laryngoscopy, biopsy and pathologists examination of a smear. Group B was formed for dysphonics with no organic changes seen through indirect laryngoscopy.


METHODS
All patients underwent indirect laryngoscopy (laryngeal mirror) and videolaryngoscopy. Patients showing an organic lesion underwent, also, suspension direct laryngoscopy, biopsy and histopathological control (reference's measurement). In all laryngoscopic procedures were determinated presence or absence of laryngeal changes (organic or functional) and the glottic area involved.


RESULTS
In 156 patients direct laryngoscopies were performed. Organic lesion could be confirmed in 154 cases. The relative sensibility of videolaryngoscopy versus laryngeal mirror account for 0.4 and its negative predictive value for 0.26. The correlation videolaryngoscopy direct laryngoscopy results in 1.


CONCLUSIONS
Videolaryngoscopy is a method with major sensibility and negative predictive value as indirect laryngoscopy with mirror. But the latter is indispensable in diagnosis of laryngeal organic lesions and must be done prior to microlaryngoscopie direct examination.
Pardal Refoyo
J L
JL
Servicio de Otorrinolaringología, Hospital Virgen de la Concha, Insalud, Zamora.
Muñoz Navarro
C
C
D006801:Humans; D007822:Laryngeal Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000473:pathology; D007828:Laryngoscopy; D007830:Larynx / Q000473:pathology; D012189:Retrospective Studies; D014743:Videotape Recording; D014832:Voice Disorders / Q000175:diagnosis / Q000209:etiology
Validez de la videolaringoscopia en la detección de lesión estructural laríngea.