Table I.

Epidemiological features of paraneoplastic patients’ phenotype

Overall patients	Male/female	Mean age	Mimicker	ACPA	RF	ANA	CRP	ESR	Involvement	Response to AT(NSAIDs/GCs/csDmards)	Response to TT
134	81 M (60%)/47 F (35%)6 unknown (5%)	53.6 ±17.23	20 RA 3 pseudogout 2 AxSPA 1 reactive arthritis	134.8 ±70 UI/ml(6)	378.9 ±395.6 UI/ml(6)	1 : 160(3)	8.72 ±7.01* mg/dl	73.06 ±34.43*	72 symmetrical polyarthritis 35 oligoarhtiris 18 monoarhtritis 6 asymmetrical polyarthritis	76.4% partial/poor 17.6% good 8.8% n.a.	39.47% remission 21% improvement 18.4% poor 18% n.a.

^*Approximately.

ACPA – anti-citrullinated protein antibodies, ANA – anti-nuclear antibodies, AxSPA – axial spondylarthritis, AT – arthritis treatment, CRP – C-reactive protein, csDmards – conventional synthetic disease-modifying antirheumatic drugs, ESR – erythrocyte sedimentation rate, GCs – glucocorticosteroids, NSAIDs – non-steroidal anti-inflammatory drugs, RA – rheumatoid arthritis, RF – rheumatoid factor, TT – tetanus toxoid.