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Related Concept Videos

Disorders of Erythrocytes01:27

Disorders of Erythrocytes

Disorders of erythrocytes, or red blood cells (RBCs), include a range of conditions affecting their number, shape, or function.
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
Cellular Adaptation IV: Dysplasia and Metaplasia01:24

Cellular Adaptation IV: Dysplasia and Metaplasia

DysplasiaDysplasia refers to abnormal changes in the size, shape, and organization of mature cells, characterized by pleomorphism, nuclear abnormalities, and increased mitotic activity. It commonly affects epithelial tissues, including the cervix, gastrointestinal tract, respiratory mucosa, and endometrium. Although it may occur alongside hyperplasia, dysplasia is not a true adaptive response but a preneoplastic change with potential to progress to cancer.When confined above the basement...
Alternative RNA Splicing02:18

Alternative RNA Splicing

Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
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Satellite Stem Cells and Muscular Dystrophy01:21

Satellite Stem Cells and Muscular Dystrophy

Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...
Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
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Updated: May 26, 2026

Use of Hematopoietic Stem Cell Transplantation to Assess the Origin of Myelodysplastic Syndrome
06:39

Use of Hematopoietic Stem Cell Transplantation to Assess the Origin of Myelodysplastic Syndrome

Published on: October 3, 2018

Myelodysplastic syndromes.

Jiehao Zhou1, Attilio Orazi, Magdalena B Czader

  • 1Department of Pathology and Laboratory Medicine/Indiana University Health Pathology Laboratory, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA.

Seminars in Diagnostic Pathology
|December 27, 2011
PubMed
Summary

Myelodysplastic syndromes (MDS) involve complex bone marrow issues leading to ineffective blood cell production. Diagnosis and prognosis now integrate morphology, genetics, and patient factors for better treatment strategies.

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Area of Science:

  • Hematology
  • Oncology
  • Stem Cell Biology

Background:

  • Myelodysplastic syndromes (MDS) are a group of clonal hematopoietic stem cell disorders.
  • Characterized by ineffective hematopoiesis, dysplasia, cytopenias, and risk of transformation to acute myeloid leukemia.
  • Pathogenesis involves complex interactions between hematopoietic stem cells and the bone marrow microenvironment.

Purpose of the Study:

  • To review the diagnostic approach to MDS.
  • To highlight recent advancements in understanding MDS pathogenesis.
  • To discuss select clinical advances and risk stratification.

Main Methods:

  • Review of diagnostic strategies, including peripheral blood smear and bone marrow morphology.
  • Integration of World Health Organization (WHO) classification schemes (2001, 2008).
  • Consideration of disease-related factors and patient-specific characteristics for prognostic assessment.

Main Results:

  • Diagnostic strategies have evolved from morphology-based to integrated approaches.
  • Prognostic assessment now includes nonhematologic comorbidities.
  • Recent developments in pathogenesis and clinical advances are highlighted.

Conclusions:

  • The diagnostic and prognostic evaluation of MDS has significantly evolved.
  • An integrated approach considering multiple factors is crucial for effective management.
  • Understanding pathogenesis and clinical advances informs treatment strategies for MDS.