Absence of clinical signs and symptoms does not discard the presence of foreign bodies in respiratory or digestive tracts, therefore, bronchoscope or panendoscopy are the two methods which allow to discard with certainty the presence of a foreign body.
Definitivamente, la rapidez en el diagnóstico es factor fundamental para determinar el pronóstico y el trata-miento, entendiendo que la ausencia de signos y síntomas no descarta la presencia de cuerpos extraños.