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

Table 3 Abrupt keratinization in oropharyngeal carcinomas

Histological type^a	Number of cases	HPV-OPC^b	nHPV-OPC^c	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

ISSN: 1746-1596