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Angiodysplasia is the most common vascular lesion of the gastrointestinal tract, and this condition may be asymptomatic, or it may cause gastrointestinal (GI) bleeding.
myelodysplasia syndrome. qualitative defect in stem cells characterized by dysplastic hematopoietic cells and the presence of abnormal blast cells in the blood. There is also anemia, leukopenia and sometimes thrombocytopenia. See also myeloproliferative disease.