abnormal bone marrow hematopoietic cell morphology +
any structural anomaly of hematopoietic cells that are resident in the bone marrow, including hematopoietic stem cells (lymphoid stem cells and myeloid stem cells) and the precursor cells for thrombocytes, erythrocytes, basophils, neutrophils, eosinophils, monocytes and lymphocytes
abnormal common lymphocyte progenitor cell morphology +
abnormal common myeloid progenitor cell morphology +