Variable

Seronegative

Seropositive

Statistical significance (p value < 0.05)

Total number

212

198

Percentage

53.5%

46.5%

Median age

48 years

36 years

Yes

PS ≥ 2

44%

58%

“B” symptoms

84%

91%

Stage III/IV

68%

83%

High grade histology

39%

98%

Yes

EN disease

49%

71%

Yes

LDH increase

85%

93%

Increased B2-M

62%

83%

Yes

Survival

42 months

11 months

Yes