Thyroid grade 4b is a grade 4b thyroid nodule, which may also be benign.
Thyroid ultrasound TIRADS grading can grade the risk of malignancy of thyroid nodules on a scale of 0 to 6, with a grade 4b suggesting a possibly malignant nodule, and a grade 4b malignancy risk of 10% to 50% for a nodule that may be benign or malignant.
Thyroid nodule grade 4b found under thyroid ultrasound should be further clarified by fine needle aspiration biopsy to determine the nature of the thyroid nodule, if malignant, it should be timely surgical resection; if benign, it can be temporarily observed, and regular ultrasound to observe the changes of the nodule.
Thyroid nodule grade 4b should go to the hospital, under the guidance of the doctor treatment.