Large granular lymphocyte leukaemia study at the University Hospital of Donostia.

Introduction: Large granular lymphocyte (LGL) leukaemia is considered a mature T-cell or natural killer (NK) cell neoplasm, characterised by a clonal proliferation of LGL.

Aims: To analyse the characteristics and to establish (if possible) the prognostic parameters of these patients diagnosed in a single centre: University Hospital of Donostia.

Methods: We retrospectively studied data about 308 patients with LGL leukaemia diagnosed in our centre.