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You need to have a fine needle biopsy for the nodules under the ultrasound to determine the diagnosis because it is not hyper/hypo.
Yes, that's right. Nodules measuring 1.0 to 1.5 cm favor biopsy. They should be monitored with periodic ultrasonography. You may take aspirin, naproxen, or ibuprofen. If it doesn't work, they would give you prednisone.