The clinical pathology of paroxysmal nocturnal hemoglobinuria (PNH) involves 3 complications: hemolytic anemia, thrombosis, and hematopoietic deficiency. The first 2 are clearly the result of the cellular defect in PNH, the lack of proteins anchored to the membrane by the glycosylphosphatidylinositol anchor. The hemolytic anemia results in syndromes primarily related to the fact that the hemoly...

The incidence of aplastic anemia was estimated in a 4-year study conducted in Israel and seven areas in Europe. Strict definition criteria were used. and all data and bone marrow specimens were reviewed by a panel of experienced hematologists. Complete ascertainment of cases was attempted by establishing a telephone network including all relevant hospitals in the study areas. The incidence of a...

Anemia is the most common hematologic disorder in patients with ulcerativecolitis (UC). In some cases, normochromic anemia results from the presenceof chronic disease; however blood loss or malabsorption may lead to aniron deficiency anemia with hypochromic appearance. Other rare hematologicmanifestations associated with UC include myelodysplastic syndromes andleukemia. Several investigators ha...

PURPOSE: Transient aplastic crisis is reported in an eight-month old child with sickle cell anemia and acute B19 parvovirus infection. This fact is uncommon in this age. PATIENT AND METHODS: The authors review the literature and describe a clinical case of an eight-month old child with sickle cell anemia presented with profound anemia and reticulocytopenia. His peripheral blood was analyzed for...

Aplastic anemia which was once considered as rare and invariably fatal disease. Over the years the understanding of its pathophysiology, its relationship with constitutional bone marrow failure syndrome and evolution to myelodysplastic syndrome and leukemia has improved. Evolution of standard immunotherapy and bone marrow transplantation has dramatically improved the survival of patients over t...

Bone marrow transplantation for severe idiopathic aplastic anemia was undertaken in a patient, using his monozygotic twin brother as the donor. In spite of the use of syngeneic bone marrow, failure of engraftment occurred on two occasions. In vitro studies demonstrated that natural killer (NK) cells from the recipient markedly inhibited the growth of donor bone marrow granulocyte progenitor cel...

We report a case of severe and fatal aplastic anemia during an episode of infectious mononucleosis caused by Epstein-Barr (EB) virus infection. The 13-year-old female patient had shown normal hematological findings and had previously undergone repeated chemotherapy and autologous bone marrow transplantation for refractory non-Hodgkin malignant lymphoma (NHL). She was probably in an immuno-suppr...