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Table 5 WHO classification (pathology) for NPC

From: Nasopharyngeal carcinoma among the pediatric patients in a non-endemic region: our experience at a tertiary care teaching hospital in Eastern India

Types Cellular characteristics
Type I Keratinizing squamous cell carcinoma
Type II Non-keratinizing (transitional) carcinoma
• Without lymphoid stroma (intermediate cell)
• With lymphoid stroma (lympho-epithelial)
Type III Undifferentiated (anaplastic) carcinoma
• Without lymphoid stroma (clear cell)
• With lymphoid stroma (lympho-epithelial)