Chronic Suppurative Otitis Media or CSOM is a long-standing infection of a part or whole of the middle ear cleft characterized by Ear discharge and a permanent Perforation. A perforation becomes permanent when its edges are covered by squamous epithelium and it does not heal spontaneously. A permanent perforation can be likened to an epithelium-lined fistulous track.
Wordwise Meaning of CSOM:
- Chronic- Long-standing
- Suppurative- Related to pus (containing or discharging pus)
- Otitis- Inflammation of the ear
- Media- Middle ear
Types of CSOM
Clinically, it can be divided into two types:-
- Also called the safe or benign type.
- It involves the anteroinferior part of the middle ear cleft,i.e, the eustachian tube and mesotympanum.
- It is associated with central perforation.
- There is no risk of serious complications.
- Also called unsafe or dangerous type.
- It involves the posterosuperior part of the middle ear cleft, i.e, attic, antrum, and mastoid.
- It is associated with an attic or marginal perforation.
- This disease is often associated with a bone-eroding process such as cholesteatoma, granulation, or osteitis, and the risk of complication is very high.
Difference between Atticoantral and Tubotympanic CSOM
|Polyp||Pale||Red and fleshy|
|Audiogram||Mild to moderate conductive deafness||Conductive deafness or mixed deafness|
This was in general about Chronic Suppurative Otitis Media. There are two types- Tubotympanic and Atticoantral CSOM.
Good way to revise the content
Thanks for words of appreciation. Most of our blogs are for mbbs students though. 😉