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Related Concept Videos

Overview of Hematopoiesis01:20

Overview of Hematopoiesis

Hematopoiesis, or blood cell production, is a vital biological process that begins early in embryonic development and continues throughout life. This process generates the various types of cells found in blood, including red blood cells, white blood cells, and platelets from hematopoietic stem cells (HSCs).
Developmental Phases of Hematopoiesis
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The process of blood cell formation is called hematopoiesis. Hematopoiesis starts early during development, on the seventh day of embryogenesis. This phase of hematopoiesis is called the primitive wave, wherein the extraembryonic yolk sac allows the production of erythroid cells and endothelial cells from a common precursor called hemangioblast. The erythroid cells provide oxygen to support the growth of the rapidly dividing embryo. Hemangioblasts later develop into hematopoietic stem cells or...
Pleural Effusion I: Introduction01:25

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Pleural effusion is an abnormal fluid accumulation in the pleural cavity, a narrow space between the lungs and the chest wall. It is not a disease per se but rather a symptom or indication of an underlying disease. In normal circumstances, this space contains a small amount of fluid (5 to 15 mL), a lubricant facilitating the non-frictional movement of the pleural surfaces.
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Erythropoiesis

Red blood cells  (RBCs) transport oxygen to all body tissues. These cells survive only for 120 days and then need to be replenished. Erythropoiesis is the process of RBC production. In healthy individuals, erythropoiesis ensures all tissues are amply supplied with oxygen. In addition, blood loss due to injury leads to a drop in the physiological oxygen level that will cause erythropoiesis. Any defect in erythropoiesis leads to several physiological disorders, including thalassemia, anemia, and...
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Ex vivo Mimicry of Normal and Abnormal Human Hematopoiesis
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Published on: April 10, 2012

[Pleural extramedullary hematopoiesis].

H Mrabti1, M Chelghoum, L Odier

  • 1Service 2BNord, département d'oncologie médicale, centre Léon-Bérard, 28, rue Laennec, 69008 Lyon, France. mrabti h@yahoo.fr

La Revue De Medecine Interne
|February 5, 2008
PubMed
Summary
This summary is machine-generated.

Extramedullary hematopoiesis in the pleura, a rare complication of myelofibrosis, can be managed with hydroxyurea-based chemotherapy, offering disease control for this severe condition.

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Published on: April 10, 2012

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Area of Science:

  • Hematology
  • Oncology
  • Pulmonary Medicine

Background:

  • Agnogenic myeloid metaplasia, also known as myelofibrosis, is a myeloproliferative neoplasm.
  • Extramedullary hematopoiesis (EMH) is the formation of blood cells outside of bone marrow.
  • Pleural EMH is a rare manifestation of myeloproliferative neoplasms with a poor prognosis.

Observation:

  • A 64-year-old woman presented with symptomatic pleural extramedullary hematopoiesis.
  • The patient was diagnosed with myelofibrosis and subsequent pleural EMH.

Findings:

  • Treatment with hydroxyurea-based chemotherapy resulted in disease control.
  • The patient's clinical, histological, therapeutic, and evolutive aspects were reviewed.

Implications:

  • This case highlights hydroxyurea as a viable therapeutic option for managing pleural EMH.
  • Understanding the clinical course and treatment of this rare entity is crucial for patient outcomes.
  • Further research into optimal management strategies for pleural EMH is warranted.