Which perforation of the tympanic
membrane is most commonly seen with
tubotympanic CSOM?
a) Central
b) Anterosuperior
c) Posterosuperior
d) Posteroinferior
Correct Answer - A
Ans. is ‘a’ i.e., Central [Ref Dhingra 5thle p. 77; Pediatric
otolaryngology 2"/e p. 478] Tubotympanic CSOM
It is also known as safe ear as it does not cause any serious
complications
Infection is is limited to antero-inferior part of middle ear cleft
(eustachain tube & mesotympanum) and is associated with central
perforation in pars tensa of tympanic membrane.