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Table 2 Prevalence of statistically significant values according to NBI IPCL pattern

From: Oral lichen planus and other confounding factors in narrow band imaging (NBI) during routine inspection of oral cavity for early detection of oral squamous cell carcinoma: a retrospective pilot study

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)

  1. 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
  2. aPVL was adjunct to this group due to its high malignant transformation potential