Category:Chronic atticoantral disease

A chronic purulent otitis media which involves perforation in the attic region (pars flaccida of the tympanic membrane) or at the posterosuperior margin, with in-growth of squamous epithelium into the middle ear. This is caused as a result of poor ventilation of the middle ear and episodes of infection.

equivalent URI:=http://purl.obolibrary.org/obo/DOID_14248