What does this mean? "severe crythroid hyperplasia consistent with hematological diagnosis of polycythemia vera"

Erythroid hyperplasi: Erythroid hyperplasia is an excess of red blood cell precursors in the bone marrow. This is can be due to benign/reactive or neoplastic processes. Polycythemia vera is a primary bone marrow disease in which too many red cells (erythroid cells) are produced due to mutation in a cell line. diagnosis is made on blood findings. This is chronic disease (not same as acute leukemia) but needs treatment