Primary thyroid lymphoma: diagnosis of immunoglobulin heavy chain gene rearrangement with polymerase chain reaction in ultrasound-guided fine-needle aspiration.

We present a case of primary thyroid lymphoma coexisting with Hashimoto's thyroiditis in a 75-year-old woman in whom B-cell lymphoma was substantiated based on the findings of immunophenotyping and polymerase chain reaction (PCR) gene rearrangement in specimens that had been obtained by ultrasound (US)-guided fine-needle aspiration biopsy (FNAB). The… (More)