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. 2015 Apr 15;8(4):5911–5917.

Figure 2.

Figure 2

US images of TI-RADS classification. Ultrasound TI-RADS category 2 (A, mainly cystic), TI-RADS category 3 (B, no suspicious features), TI-RADS category 4a (C, solidity), TI-RADS category 4b (D, solidity and hypoechogenicity), TI-RADS category 4c (E, solidity, marked hypoechogenicity, irregular margins and taller-than-wide shape), TI-RADS category 5 (F, solidity, hypoechogenicity, irregular margins, microcalcifications and taller-than-wide shape); TI-RADS = thyroid imaging reporting and data system.