[Considerations concerning respiratory physiopathology in a case of total arhinia].

The Authors describe their personal experience in a rare case of total arhinia in a young boy, now seven years old, whose psycho-physical development is normal and who is healthy except for recurrent conjunctivitis due to the absence of nasolacrimal ducts. The Authors consider the possibility that in the case of total absence of the nasal function, as in total arhinia, the oropharyngeal and laryngotracheobronchial mucosa may acquire those functional and defensive properties typically belonging to nasal mucosa. In the subject in question, in fact, functional respiratory and immunosecretory parameters are normal. On the other hand, being well known how problematic acquired severely compromised nasal functions are one would think that only in the case of congenital absence of the nose can the lower aerodigestive structures compensate successfully. In the Authors' opinion this clinic observation contradicts the widely held belief that nasal respiration is absolutely necessary from the moment of birth on.