title: Primary thyroid lymphoma: diagnosis of immunoglobulin heavy chain gene rearrangement with polymerase chain reaction in ultrasound-guided fine-needle aspiration.
abstract: 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 immunophenotyping technique showed A light chain restriction, and PCR-based assays showed a discrete narrow band, which was diagnostic for clonal B-cell proliferation. Analyses of PCR gene rearrangement in US-guided FNAB may be a useful ancillary technique to pathological findings for diagnosis of primary thyroid lymphoma, especially for differentiation between low-grade B-cell lymphomas and Hashimoto's thyroiditis.
authors.affiliation: Department of Radiology, Shinshu University School of Medicine, Matsumoto, Japan. shodayu@hsp.md.shinshu-su.ac.jp
authors.forename: S
authors.initials: S
authors.lastname: Takashima
authors.forename: F
authors.initials: F
authors.lastname: Takayama
authors.forename: A
authors.initials: A
authors.lastname: Saito
authors.forename: Q
authors.initials: Q
authors.lastname: Wang
authors.forename: K
authors.initials: K
authors.lastname: Hidaka
authors.forename: S
authors.initials: S
authors.lastname: Sone
mesh_terms: D000368:Aged; D001707:Biopsy, Needle; D002454:Cell Differentiation; D005260:Female; D006801:Humans; D007143:Immunoglobulin Heavy Chains / Q000235:genetics*; D016393:Lymphoma, B-Cell / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000235:genetics*; D010641:Phenotype; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013964:Thyroid Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000235:genetics*; D014463:Ultrasonography
chemical_list: D007143:Immunoglobulin Heavy Chains