Lymphoproliferative disease of "LAK cell" precursor large granular lymphocytes in association with celiac disease

CD103+ γδ T cell large granular lymphocytosis in a patient with refractory celiac disease: a diagnostic enigma

Indolent γδ T cell lymphomas/leukemias are rare and overlap with the morphological spectrum of large granular lymphocyte (LGL) leukemia. We report an extremely rare case of CD103(+) γδ T LGL leukemia in a patient with celiac disease who presented with refractory diarrhea. Whether the refractory diarrhea in our patient was a manifestation of LGL leukemia itself or whether the clonal LGL expansion is a manifestation of refractory celiac disease (RCD) remains an enigma. This report highlights the diagnostic difficulties and the need of consensus in categorizing clonal CD103(+) lymphocytosis in patients with RCD.

Large granular lymphocytic leukemia: a treatable form of refractory celiac disease

Large granular lymphocyte leukemia (LGL) is characterized by clonal expansion of CD3+ T cells or CD3(-) natural killer cells and frequently is associated with autoimmune diseases. We describe 2 patients with celiac disease who no longer responded to gluten-free diets after they developed T-cell LGL, with intestinal localization of malignant lymphocytes. Flow cytometry phenotyping of isolated intestinal intraepithelial and lamina propria cells eliminated type II refractory celiac disease, identifying large-sized CD8(+)CD57(+) T cells. Treatment with a combination of cyclosporine and methotrexate restored the patients' sensitivity to gluten-free diets. LGL therefore might be a cause of refractory celiac disease that is sensitive to immunosuppressive therapy.

[Large granular T-cell lymphocytic leukemia disclosed by bilateral uveitis: association with celiac disease]

A 70-year-old woman presented with bilateral anterior uveitis. She was on a gluten-free diet because of a celiac disease which had been diagnosed 3 months before. An anterior chamber aspirate contained a majority of large granular lymphocytes (LGL). The investigation of a chronic neutropenia led to the diagnosis of an otherwise typical T-LGL leukemia. This seems to be the first report of a CD3+ CD4- CD8+ T-LGL leukemia causing anterior uveitis through infiltration of leukemic cells, and the second report of an intriguing association of celiac disease with T-LGL leukemia.