Description
- Chronic inflammation of the middle ear and mastoid cavity associated with conductive hearing loss and recurrent otorrhea through a defect in the tympanic membrane
- Patient presenting with a history of recurrent ear infection associated with painless discharge from the ear is usually indicative of CSOM
Types of CSOM
Clinically, it is divided into two types:
- Tubotympanic - also called the safe or benign type; it involves anteroinferior part of middle ear cleft, associated with a central perforation
- Atticoantral - also called unsafe or dangerous type; it involves posterosuperior part of the cleft associated with an attic or a marginal perforation