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Thyroid Nodule Grading Interpreter
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Interpret thyroid nodule TI-RADS grades and assess malignancy risk based on standard guidelines.
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Are you confused when your thyroid ultrasound report shows terms like "Grade 4A" or "Grade 5"? Based on the internationally recognized TI-RADS grading system, this tool translates grade 1-6 nodules (including 4A, 4B, and 4C subcategories) from medical imaging reports into easy-to-understand risk assessments. Each grade corresponds to a specific malignancy probability range (e.g., Grade 3 is <5%, Grade 4C is 50-80%), helping non-medical professionals quickly grasp the key information in their reports.
Is a biopsy mandatory for a TI-RADS 4 nodule?
Not necessarily. Grade 4A (5-10% malignancy rate) may just require follow-up observation, whereas a biopsy is highly recommended for Grade 4C (50-80%).
Does this grading standard apply to all hospitals?
This tool primarily references the ACR (American College of Radiology) TI-RADS standard. Some hospitals may use similar systems like C-TIRADS or the Kwak system, where the definition of Grade 4 might slightly differ. We recommend consulting your attending physician with your complete report.
This tool does not replace a clinical diagnosis. If your report shows Grade 4B or higher, or includes high-risk features like "microcalcifications" or a "taller-than-wide shape," please schedule an appointment with a specialist immediately. Special populations, such as pregnant women, require individualized assessment and should not determine their treatment plan based solely on the grading.
Typical example: An ultrasound describing a "hypoechoic nodule with punctate echogenic foci" usually corresponds to Grade 4. Note the key difference between a "spongiform nodule" (Grade 3) and a "solid hypoechoic nodule" (Grade 4). For multiple nodules, the assessment should be based on the nodule with the highest risk; do not average the grades.
