OBJECTIVE: The first aim was to determine the prevalence, kind, and functional effects on hearing of ossicular chain suffering (OCS) in @entity102 without @entity3540 (NCOM) and tympanic perforations (TP). The second aim was to correlate the findings with clinical parameters and hearing level. MATERIALS AND METHODS: The study group comprised 250 consecutive @entity1 affected by NCOM and who were subjected to tympanoplasty and never operated on before. Each @entity1 underwent preoperative pure tone audiometry. Ossicles were evaluated during surgery. The incidence of OCS in NCOM was reported in 15-62% of the @entity1 . RESULTS: Ossicular chain suffering was found in 26 out of the 250 @entity1 included in the overall sample (10%). It was found in 7% of the @entity1 affected by TP without @entity2972 and in 19% of the @entity1 affected by chronic ear discharge with drum perforation. OCS was found most frequently in posterior eardrum perforations and in @entity1 with bilateral disease. The incus was the ossicle most frequently interested by resorption (92% of the @entity1 ). The air conduction threshold and air bone gap were more impaired in NCOM than in TP. CONCLUSION: Ossicular chain damages in @entity1 with non-cholesteatomatous middle ear pathologies are not frequent and are present in no more than 10% of the @entity1 , but lesions found were similar to those reported in @entity1 with @entity3540 . Otorrhea, posterior perforation, and bilateral disease can be considered as good predictors of OCS.

Ossicular Chain Lesions in Tympanic Perforations and Chronic Otitis Media without XXXX .

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity3540 :: ('MESH:D002781', 'Disease') :: ['cholesteatoma'] @entity2972 :: ('MESH:D002558', 'Disease') :: ['otorrhea'] @entity102 :: ('MESH:D002908', 'Disease') :: ['chronic otitis']
@entity3540 :: (MESH:D002781,Disease) :: ['Cholesteatoma']
