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Table 3 Abrupt keratinization in oropharyngeal carcinomas

From: Histological subtypes and characteristic structures of HPV-associated oropharyngeal carcinoma; study with Japanese cases

Histological typea Number of cases HPV-OPCb nHPV-OPCc P value
Conventional SCC     
KSCC 0/22(0%) 0/1(0%) 0/21(0%)  
NKSCC 13/21(61.9%) 11/15(73.3%) 2/6(33.3%)  
HSCC 7/11(63.6%) 7/7(100.0%) 0/4(0%)  
Variant SCC 0/12(0%) 0/8(0%) 0/4(0%)  
Total SCC 20/66(30.3%) 18/31(58.1%) 2/35(5.7%) <0.001