Author

Findings in middle ear cleft (in inactive Otitis media cases only) in percentage

Aditus blockage

Mucosal edema/hypertrophy

Granulation tissue

Polyp

Tympanosclerosis

Ossicular involvement

Kakkar, et al. [11]

7

18

-

-

-

7

Rickers, et al. [6]

-

36

57

4

-

22

Sady, et al.  [12]

-

-

96

-

43

96

Da costa, et al. [12]

-

-

97

-

20

90

Krishnan, et al. [9]

-

-

42

53

37

-

Meyerhoff, et al. [3]

-

-

48

0

26

-

Bhagat [17]

10

-

-

-

-

-

Current study

72

17

27

-

22

0