Role of mammogram and ultrasound imaging in predicting breast cancer subtypes in screening and symptomatic patients

Table 1 Classification of imaging features based on American College of Radiology Breast Imaging Reporting and Data System Lexicon

Imaging feature	Classification
Mammogram
Appearance	Mass
	Asymmetry
	High risk microcalcifications1
	Architectural distortion
Ultrasound
Margins	Spiculated
	Microlobulated
	Circumscribed
Posterior acoustic features	Shadowing
	Enhancement
	Mixed
	None
Size	Maximum dimension on ultrasound (in mm)
Echogenicity	Homogenous
	Heterogeneous
	Complex cystic
Adler’s index	Low (Grade I)
	Medium (Grade II)
	High (Grade III)

¹High risk microcalcifications refer to microcalcifications which show grouped, linear, or segmental distribution, or with a pleomorphic or branching morphology.