A case of a 16-year old female patient with large hyperplastic adenoid
s is presented. The only subjective symptoms were blocked nasal ventil
ation and subsequent permanent mouth breathing for 10 years. Concomita
nt sinusitis and middle ear affection were absent. In addition a gothi
c palate with malocclusion due to prognathism was found. The possible
relationship between hyperplastic adenoids, chronic mouth breathing an
d craniofacial growth is discussed.