Table 1: Previous reports of differential diagnosis between benign and malignant soft tissue tumors.

Author (Year of publication)	Significant parameters useful for discrimination	Reference
Giovagnorio F (1999)	Increased vascularization	[13]
Belli P (2000)	Irregular margin, Hypoechoic pattern, Increased vascularization, Vessel arrangement, Systolic velocities	[21]
Bodner G (2002)	Vessel arrangement, Vessel structure, Minimum/maximum resistive index	[14]
Griffith JF (2004)	Vascular organization, End diastolic velocity, Resistive index	[16]
Chiou HJ (2009)	Infiltrated margins, Scalloped shape, Size, Ill-defined margin,	[11]
Chen CY (2009)	Morphologic and texture feature diagnosed by computer-aided diagnosis system	[22]
Chiou HJ (2010)	Vascular index, Flow index, Vascular-flow index	[23]
Stramare R (2013)	Peak enhancement intensity	[24]
Oebisu N (2014)	Size, Depth, Heterogeneous texture, Ill-defined margin, Increased vascularization	[10]
Nagano S (2015)	Size, Hypoechoic pattern, Heterogeneous texture, Increased vascularization,	[12]
De Marchi A (2016)	Inhomogeneous perfusion, Arterial uptake	[25]
Gruber L (2016)	Inhomogeneous contrast enhancement	[7]
Morii T (2018)	Size, Ill-defined margin, Increased vascularization	[26]