We present here a case report of a 69-year-old female patient with T granular lymphocyte proliferative disorder (T-GLPD) expressing the γ/δ T-cell receptor. The patient had been treated for rheumatoid arthritis for 25 years, and presented with mild anaemia. Cell-surface marker analysis was carried out using flow cytometry and natural killer function was determined using a chromium release assay. The case report is followed by a summary of the 21 other γ/δ T-GLPD cases reported in the literature and a comparison of their clinical characteristics with those of T-GLPD cases expressing the α/β T-cell receptor. The clinical symptoms and the frequency of association with rheumatoid arthritis are similar in γ/δ and α/β T-GLPD, but a prevalence of the CD8- cell-surface marker and enhanced natural killer function appear to be characteristics of γ/δ T-GLPD.
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