(¡v) Tympanogram
In conventional curettage group, 38 ears (76%) and in endoscopic microdebrider assisted group 39 ears (78%) had a B or C type of curve at presentation (p value 0.813 = not significant). After first postoperative follow up, 20 ears (40%) in conventional group and 9 ears in endoscopic microdebrider assisted group had a B or C type of curve (p value 0.016 = statistically significant). At the time of 2nd follow up, 10 ears (20%) in conventional group and 4 ears (8%) in endoscopic microdebrider assisted group had a B or C type of curve (p value 0.085 = not significant). (Table 4)