Case series of extradigital glomus tumors: imaging findings, differential diagnosis and radiologic–pathologic correlation

Egyptian Journal of Radiology and Nuclear Medicine

Table 2 (a) US Characteristics of 10 patients: (b) MRI Characteristics of 4 patients

	Case 1	Case 2	Case 3	Case 4	Case 5	Case 6	Case 7	Case 8	Case 9	Case 10
a
B Mode
Localization	Hypodermis	Hypodermis	Hypodermis	Hypodermis	Hypodermis	Hypodermis	Hypodermis	Hypodermis	Hypodermis	Hypodermis
Echogenic structure	Solid	Solid	Solid	Solid	Solid	Solid	Solid	Solid	Solid	Mixed
Borders	Well defined	Well defined	Well defined	Well defined	Well defined	Well defined	Well defined	Well defined	Well defined	Polylobulated well defined
Echogenicity	Hypoechoic	Hypoechoic	Hypoechoic	Hypoechoic	Hypoechoic	Hypoechoic	Hypoechoic	Hypoechoic	Hypoechoic	Heterogeneous
“Vascular stalk sign''	(−)	(+)	(+)	(−)	(+)	(−)	(+)	(−)	(−)	(−)
Doppler color
Flow (±)	(+)	(+)	(+)	(+)	(+)	(+)	(+)	(+)	(−)	(+)
Flow localization	Intralesional	Both	Both	Both	Intralesional	Intralesional	Intralesional	Intralesional	DA	Intralesional
Spectral Doppler
Flow (arterial/venous/both)	Both	NR	Arterial	NR	Both	NR	Both	NR	DA	NR
		Case 2					Case 7			Case 10	Case 11
b
T1 signal		Low to intermediate SI					Low to intermediate SI			Heterogeneous	Low to intermediate SI
T2 signal		Intense high SI					Intense high SI			Heterogeneous	Intense high SI
T1 + Contrast: Enhancement		Avid					Avid			Solid component	Avid