Table 1.

The presence of β2-AR on NPC tumor cells in undifferentiated NPC biopsies

Diagnosis/commentsMorphologyTypeEBVβ2-AR
1LymphoepitheliomaUndifferentiated3NT1+
2Not indicatedUndifferentiated3+ (IHC)1+
3CarcinomaUndifferentiated3NT2+
4NonkeratinizedUndifferentiated2+ (IS)2+
5Not indicatedUndifferentiated3+ (IS)2+
6Acute and chronic inflammationUndifferentiated2NT2+
7Lymphoid hyperplasiaUndifferentiated2-3NT3+
  • Abbreviations: NT, not tested; IHC, immunohistochemistry; IS, in situ hybridization.