Parasitic thyroid nodule in hashimoto's thyroiditis.

We present a case of parasitic thyroid nodule in a 62-year-old woman with Hashimoto's thyroiditis. The patient underwent right hemithyroidectomy for a 15-mm nodule suspicious for malignancy. A recurrential ipsilateral lymph nodule was identified and removed. Conclusive histopathologic study confirmed that the mass was an extracapsular thyroid nodule (parasitic nodule).