Diagnostic Category

Risk of Malignancy if NIFTP Not Cancer

Risk of Malignancy if NIFTP Equals Cancer

Usual Management

Non-diagnostic or unsatisfactory

5% to 10%

5% to 10%

Repeat FNA with ultrasound guidance

Benign

0% to 3%

0% to 3%

Clinical and sonographic follow-up

Atypia of undetermined significance or follicular lesion of undetermined significance

6% to 18%

10% to 30%

Repeat FNA, molecular testing, or lobectomy

Follicular neoplasm or suspicious for a follicular neoplasm

10% to 40%

25% to 40%

Molecular testing, or lobectomy

Suspicious for malignancy

45% to 60%

50% to 75%

Near-total thyroidectomy or lobectomy

Malignant

94% to 96%

97% to 99%

Near-total thyroidectomy or lobectomy