Category Right Left Both Total
n % n % n %  
Inflammation 193 51.33 176 46.81 7 1.86 376
Cystic lesion 142 51.45 122 44.20 12 4.25 276
Benign neoplasm 238 45.95 253 48.84 27 5.21 518
Atypia 23 47.92 25 52.08 - - 48
Malignant neoplasm 125 49.60 123 48.81 04 1.59 252
Total 721 49.05 699 47.55 50 3.40 1470
Table 4: Side involvement by different lesion.