Table 3.

Comparison of FNAC guidelines with case studies. Malignant ultrasound findings and FNAC recommendations are presented in bold.

Case		A		B		C		D
Shape		Irregular Taller than Wide		Regular Wider than Tall		Irregular Taller than Wide		Regular Wider than Tall
Border	Definition	Ill-defined		Well-defined		Ill-defined		Well-defined
	Character	Jagged		Smooth		Jagged		Smooth
Internal echoes	Level	Hypoechoic		Hypoechoic		Isoechoic		Isoechoic
	Heterogeneity	Heterogeneous		Heterogeneous		Homogeneous		Homogeneous
Strong echoes		Multiple and fine		None		None		None
Marginal hypoechoic zone (halo)		Absent		None		None		Regular
Solid/cystic		Solid		Solid		Spongiform		Solid
Estimated risk of malignancy	JABTS	Strongly suspicious		Suspicious		Not suspicious		Not suspicious
	ATA	High suspicion		Intermediate suspicion		Very low suspicion		Low suspicion
	ACR	Highly suspicious		Moderately suspicious		Moderately suspicious		Mildly suspicious
Assumed size		9 mm	11 mm	14 mm	16 mm	19 mm	26 mm	19 mm	26 mm
Recommended strategy	JABTS	FNAC	FNAC	FNAC	FNAC	Follow up	FNAC	Follow up	FNAC
	ATA	Consider FNAC	FNAC	FNAC	FNAC	Follow up	FNAC	FNAC	FNAC
	ACR	Follow up	FNAC	Follow up	FNAC	FNAC	FNAC	Follow up	FNAC