disease arises from structure hematopoietic cell hematopoietic and lymphoid system neoplasm neoplasm (disease) hematopoietic and lymphoid cell neoplasm A neoplasm arising from hematopoietic cells found in the bone marrow, peripheral blood, lymph nodes and spleen (organs of the hematopoietic system). Hematopoietic cell neoplasms can also involve other anatomic sites (e.g. central nervous system, gastrointestinal tract), either by metastasis, direct tumor infiltration, or neoplastic transformation of extranodal lymphoid tissues. The commonest forms are the various types of leukemia, Hodgkin and non-Hodgkin lymphomas, myeloproliferative neoplasms, and myelodysplastic syndromes. HEMOLYMPHORETICULAR tumor, malignant MONDO:0044881 NCIT:C27134 hematologic cancer hematologic malignancy hematologic neoplasm hematological neoplasm hematological tumor hematopoietic and lymphoid cell neoplasm hematopoietic and lymphoid neoplasms hematopoietic cancer hematopoietic cell tumor hematopoietic malignancy, NOS hematopoietic neoplasm hematopoietic neoplasms including Lymphomas hematopoietic tumor hematopoietic, Including myeloma malignant hematologic neoplasm malignant hematopoietic neoplasm