ICD-11 definition : Having a tympanic membrane perforation for at least three months, chronic suppurative
otitis media has traditionally been classified into safe and unsafe type. Chronic
tubotympanic suppurative otitis media is considered safe (meaning it is unlikely to
become a worse problem for the patient) if it involves a central perforation of the
pars tensa with the inflammatory process affecting the mucosa of the middle ear cleft.;
Having a tympanic membrane perforation for at least three months, chronic suppurative
otitis media has traditionally been classified into safe and unsafe type. Chronic
tubotympanic suppurative otitis media is considered safe (meaning it is unlikely to
become a worse problem for the patient) if it involves a central perforation of the
pars tensa with the inflammatory process affecting the mucosa of the middle ear cleft.