. 2018 Sep 22;38(2):172–180. doi: 10.14366/usg.18012

Table 3.

Classification of suspicious ultrasonography findings in the re-modified categorization

Classification	Finding
Minor	Round shape >11 mm^a)
	Non-circumscribed margin: microlobulated, indistinct, or angular
	Echogenic halo^a)
	Complex cystic and solid
	Posterior shadowing
	Nonparallel orientation
	Microcalcification: within or outside mass/intraductal^a)
	Duct extension
	Internal vascularity^a)
Major	Irregular shape^a)
	Spiculated margin^a)

Category 4: Suspicious abnormality-one or more suspicious findings, not category 5.

Category 4a was defined as lesions showing one or more minor suspicious findings, category 4b as lesions showing more than three minor suspicious findings or one major suspicious finding with one or two minor suspicious findings, and category 4c as lesions showing one major suspicious finding with or without minor suspicious findings.

^a)

Revised criteria for major and minor suspicious findings from the initially modified categorization to the re-modified categorization. Size was added to the minor suspicious findings for breast masses, along with round shape, an echogenic halo, and internal vascularity. Microcalcifications were moved from the major suspicious findings to the minor suspicious findings. The major suspicious findings consisted of an irregular shape and spiculated margins.