The superficial lymph node enlargement (40 cases, 95.2%) of patients with B-LAHS was more significant (p = 0.006) compared with T/NK-LAHS (40 cases, 74.1%), while patients with T/NK-LAHS had lower neutrophil count (median 1.3×109/L vs. 2.2×109/L) (p = 0.005), lower fibrinogen level (median 1.9 g/L vs. 3.3 g/L) and higher transaminase levels (ALT 59.5 U/L vs. 22.0 U/L, AST 60.2 U/L vs. 32.2 U/L) (p < 0.001) and more likely to have co-infection with EBV (41 cases, 75.9% vs. 8 cases, 19.5%) (p < 0.001). This evidence concerns the gene GPT and coinfection.