Introduction: Chronic suppurative otitis media (COM), mucosal variety is defined as a chronic inflammation of the middle ear and mastoid cavity, which presents with recurrent ear discharges or otorrhoea through a tympanic perforation.

Aims: To find out the incidence of chronic otitis media with respect to age and sex in the study  population and to compare the graft up–take rate, the graft failure rate, the rate of residual perforation and the  degree of hearing improvement between the two modalities of treatment of type 1 tympanoplasty with cortical mastoidectomy  and type 1 tympanoplasty aloone.

Methods: The 80 patients were randomly divided into two equal groups with 40 patients undergoing type 1 tympanoplasty with cortical mastoidectomy (group A) and 40 patients undergoing type 1 tympanoplasty (Group B).  Post operatively all the patients were followed up for a total of 6 months with weakly intervals on 1^st month; bi weekly on 2^nd month; monthly on 3rd and 6th month. Post operatively all the study patients were assessed for the status of the graft; mobility, rejection or residual perforation of the graft and the hearing improvement.

Conclusion In successful graft take up, results of hearing improvement is better in Tympanoplasty with cortical mastoidectomy than with Tympanoplasty alone. Possibility of finding mastoid antral pathology is more in patients having Chronic otitis media (mucosal) with sub total perforation as observed in this study