Concurrent JAK2 mutation and isolated del(5q) associated with marrow fibrosis and small hypo/monolobated megakaryocytes

![Figure][1] A 68-year-old woman of Asian descent presented with fatigue and anemia requiring blood transfusion. There was no splenomegaly. The blood work revealed hemoglobin, 59 g/L; mean corpuscular volume, 103 fL; absolute neutrophil count, 2.3 × 109/L; platelets, 238 × 109/L; and