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Myelofibrosis was first described in 1879 by Gustav Heuck. [33] [34] Eponyms for the disease are Heuck-Assmann disease or Assmann's Disease, for Herbert Assmann, [35] who published a description under the term "osteosclerosis" in 1907. [36] It was characterised as a myeloproliferative condition in 1951 by William Dameshek. [37] [38]
Myeloproliferative neoplasms (MPNs) are a group of rare blood cancers in which excess red blood cells, white blood cells or platelets are produced in the bone marrow. Myelo refers to the bone marrow, proliferative describes the rapid growth of blood cells and neoplasm describes that growth as abnormal and uncontrolled.
Bone biopsy shows abnormal megakaryocytes, macrocytic erythropoiesis, and defects in neutrophil production and fibrosis of the marrow (myelofibrosis). Clinically, patients present with reduction in the count of all blood cells (pancytopenia), very few blasts in the peripheral blood, and no or little spleen enlargement (splenomegaly).
Ruxolitinib (sold under the brand names Jakafi and Jakavi among others, and as Opzelura in cream form) is a medication used for the treatment of intermediate or high-risk myelofibrosis, [6] a type of myeloproliferative neoplasm that affects the bone marrow; [11] [12] polycythemia vera, when there has been an inadequate response to or intolerance of hydroxyurea; [6] [13] and steroid-refractory ...
Myelophthisic anemia (or myelophthisis) is a severe type of anemia found in some people with diseases that affect the bone marrow. Myelophthisis refers to the displacement of hemopoietic bone-marrow tissue [1] by fibrosis, tumors, or granulomas. The word comes from the roots myelo-, which refers to bone marrow, and phthisis, shrinkage or atrophy.
Depending on eosinophil target-organ infiltration, the clinical presentation of hypereosinophilic syndrome (HES) varies from patient to patient. [13] Individuals with myeloproliferative variant HES may be more likely to experience mucosal ulcerations involving the genitalia or airways, while patients with lymphocytic variant HES typically exhibit prominent skin symptoms such as urticarial ...
In Klein’s case, a Postal Service spokeswoman said, the problem is the road. Hillman Ridge is paved but narrows to a width slightly larger than a pickup truck as it approaches Klein’s property.
Other pre-existing bone-marrow disorders such as acquired aplastic anemia following immunosuppressive treatment and Fanconi anemia can evolve into MDS. [15] MDS is thought to arise from mutations in the multipotent bone-marrow stem cell, but the specific defects responsible for these diseases remain poorly understood.