Table 1.

Clinical characteristics of patients enrolled with pleural lesions

Clinical characteristics	Infection (n = 313)	Non-infection (n = 147)	P
Median age, years (range)	31(16, 80)	44.6 (24,78)	0.01*
Sex n (%)
Male	215(68.69)	80( 54.42)	0.03*
Clinical signs and symptoms n (%)
Fever	309 (98.72)	12(8.16)	< 0.01*
Emaciation	255 (81.47)	112 (76.19)	1.42
Chest pain	190 (60.70)	120 (81.63)	< 0.01*
Chest CT imaging n (%)
Pleural lesion	313 (100.00)	147 (100.00)	5.76
Pleural lesion with pleural effusion	240 (67.43)	90 (61.22)	1.09
CEUS performance n (%)
Necrosis n (%)	260 (79.51)	72(54.13)	< 0.01*
Obvious peripheral vessels n (%)	146 (44.65)	109(81.95)	< 0.01*

^*Indicated significant differences between two groups