Table 2.
Prevalence of statistically significant values according to NBI IPCL pattern
| Value (statistical significance) | Pattern I(%) | Pattern II(%) | Pattern III(%) | Pattern IV (%) | Total |
|---|---|---|---|---|---|
| Type of lesion (p < 0.001) | |||||
| OSCC/Cis | 0 | 1(2.5) | 1(4.2) | 17(70.8) | 19(17.9) |
| HGD | 0 | 0 | 1(4.2) | 3(12.5) | 4(3.8) |
| PVL | 0 | 0 | 1(4.2) | 2(8.3) | 3(18.9) |
| LGD | 4 (22.2) | 7(17.5) | 7(29.2) | 2(8.3) | 20(2.8) |
| OLP | 3 (16.7) | 14(35) | 13(54.2) | 0 | 30(28.3) |
| K | 11(61.1) | 18(45) | 1(4.2) | 0 | 30(28.3) |
| Total | 18(100) | 40(100) | 24(100) | 24(100) | 106(100) |
| Malignant lesions vs benign lesions comprehending OLP (p < 0.001) | |||||
| OSCC/Cis/HGDa | 0 | 1(2.5) | 3(12.5) | 22(91.7) | 26(24.5) |
| Benign lesions | 18(100) | 39(97.5) | 21(87.5) | 2(8.3) | 80(75.5) |
| Total | 18(100) | 40(100) | 24(100) | 24(100) | 106(100) |
| Malignant lesions vs benign lesions not-comprehending OLP (p < 0.001) | |||||
| OSCC/Cis/HGDa | 0 | 1(3.8) | 3(27.2) | 22(91.7) | 26(34.2) |
| Benign lesions without OLP | 15(100) | 25(96.2) | 8(72.8) | 2(8.3) | 50(65.8) |
| Total | 15(100) | 26(100) | 11(100) | 24(100) | 76(100) |
| Site of lesions (p = 0.014) | |||||
| Tongue | 3(16.7) | 6(15) | 6(25) | 15(62.5) | 30(28.3) |
| Buccal mucosa | 8(44.4) | 23(57.5) | 13(54.2) | 3(12.5) | 47(44.3) |
| Hard palate | 4(22.2) | 4(10) | 1(4.2) | 2(8.3) | 11(10.4) |
| Soft palate | 1(5.6) | 1(2.5) | 0 | 1(4.2) | 3(2.8) |
| Gum | 2(11.1) | 5(12.5) | 2(8.3) | 1(4.2) | 10(9.4) |
| Floor of mouth | 0 | 1(2.5) | 2(8.3) | 2(8.3) | 5(4.7) |
| Total | 18(100) | 40(100) | 24(100) | 24(100) | 106(100) |
| Type of epithelium (p = 0.002) | |||||
| Tongue | 3(16.7) | 6(15) | 6(25) | 15(62.5) | 30(28.3) |
| Masticatory | 6(33.3) | 11(27.5) | 4(16.7) | 4(16.7) | 25(23.6) |
| Lining | 9(50) | 23(57.5) | 14(58.3) | 5(20.8) | 51(48.1) |
| Total | 18(100) | 40(100) | 24(100) | 24(100) | 106(100) |
OSCC/Cis oral squamous cell carcinoma/ carcinoma in situ, HGD high grade dysplasia, PVL proliferative verrucous leukoplakia, LGD low grade dysplasia, OLP oral lichen planus, FK Frictional Keratosis
aPVL was adjunct to this group due to its high malignant transformation potential