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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