To investigate the feasibility of applying the transcanal endoscopic approach (TEA) for surgical treatment of residual/recurrent @entity3540 and present the preliminary results of 17 revision procedures that were carried out with this minimally invasive approach. The records of 17 @entity1 (aged 5-76  years) who underwent transcanal revision procedure using rigid 3-mm diameter, 0  , 30   and 45   endoscopes between 2009 and 2012 were retrospectively reviewed. A wide posterior tympanomeatal flap was elevated via the external auditory canal and then transposed inferiorly in cases of @entity3540 situated in the middle ear under a tympanic membrane. In certain cases, @entity3540 was assessed and removed using the endoscopes directly from the radical cavity or from the @entity2267 remaining after a canal-wall-down procedure. Six @entity1 had originally undergone the canal-wall-up mastoidectomy, 6 @entity1 had a canal-wall-down mastoidectomy and 5 @entity1 had radical @entity2267 cavities. The interval between the previous and the index surgery ranged between 1 and 6  years. The attic was the most common site involved with @entity3540 , followed by the tympanic portion of the facial nerve, sinus tympani, @entity2267 , supratubal recess, promontory, round and oval windows. The size of residual/recurrent lesion varied between 3 and 15  mm. The @entity1 were followed up 26-67  months (mean 52.1  months). The single recurrence (a 4-mm pearl over the tympanic portion of the facial nerve) was eradicated by a transcanal re-revision 1  year following the index surgery. Minimally invasive TEA can be successfully applied in carefully selected @entity1 with endoscopically accessible @entity3540 subsequent to various types of mastoidectomy.

The utility of minimally invasive transcanal endoscopic approach for XXXX : preliminary results.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity3540 :: ('MESH:D002781', 'Disease') :: ['cholesteatoma'] @entity2267 :: ('MESH:D008417', 'Disease') :: ['mastoid cavity', 'mastoid']
@entity3540 :: (MESH:D002781,Disease) :: ['removal of residual/recurrent cholesteatoma']
