Materials were 236 ears of 213 @entity1 with @entity5479 undergoing canal wall reconstruction during 1993-1998. Subjects were followed up for at least 1 year after final operation. Of 236 ears, 147 (62%) underwent 1-stage operation and 89 ears (38%) required 2-stage operation. Hearing results were successful in 157 ears (67%) based on criteria proposed by the Otological Society of Japan. The success in ears undergoing 1-stage operation was 74% and 54% in ears undergoing 2-stage operation. Postoperative hearing and air-bone gap in the 1-stage group were significantly better than in the 2-stage group. For tympanoplasty, success was 97% in type I, 64% in type III, and 53% in type IV. The likelihood of undergoing 2-stage operation increased with the type of tympanoplasty, from type I to IV. Postoperative hearing was significantly worse in older age groups. Of the 89 ears, 13 (15%) had recurrent @entity3540 and 29 (33%) had residual @entity3540 at 2-stage operation. In the 135 in the 1-stage group, recurrent @entity3540 was observed at follow-up in 13 ears (9.6%). When we analyzed clinical risk factors for both recurrent and residual @entity3540 in age, gender, @entity2972 , types of @entity3540 , and types of tympanoplasty, no significant factors were seen for recurrent or residual @entity3540 . These results indicate that canal wall reconstruction tympanoplasty for @entity5479 yields relatively good hearing results. However, more effort is needed to reduce the incidence of recurrent and residual @entity3540 .

[Surgical results of canal wall reconstruction tympanoplasty in XXXX ].

@entity1 :: ('9606', 'Species') :: ['patients'] @entity5479 :: ('MESH:D018424', 'Disease') :: ['middle ear cholesteatoma'] @entity3540 :: ('MESH:D002781', 'Disease') :: ['cholesteatoma'] @entity2972 :: ('MESH:D002558', 'Disease') :: ['otorrhea']
@entity5479 :: (MESH:D018424,Disease) :: ['middle ear cholesteatoma']
