Polycythaemia rubra vera and myelofibrosis with spinal cord compression

I C Scott1, C H Poynton

  • 1Department of Haematology, University Hospital of Wales, Heath Park, Cardiff, UK. ian.c.scott@btinternet.com

Insights

Spinal cord compression is a rare complication of myelofibrosis and polycythaemia rubra vera (PRV). Combined treatment offers a better prognosis for neurological improvement and survival in these patients.

Area of Science:

  • Hematology
  • Neurology
  • Oncology

Background:

  • Extramedullary hemopoiesis can cause spinal cord compression, a rare complication in myelofibrosis and polycythemia rubra vera (PRV).
  • Optimal treatment strategies for this condition remain uncertain, necessitating a review of existing literature.

Observation:

  • A case of a 69-year-old male with PRV who developed spinal cord compression due to extramedullary hemopoiesis is presented.
  • A systematic review of 21 reported cases (including the current one) of myelofibrosis and PRV with this complication was conducted.

Findings:

  • The mean symptom duration was 7.6 months, with 17 out of 21 patients being male.
  • Neurological improvement was observed in 14 patients, and 12 survived.
  • Combined treatment (irradiation with laminectomy or chemotherapy) resulted in 75% neurological improvement and 100% survival.
  • Single treatments yielded 67% neurological improvement and 33% survival.

Implications:

  • Spinal cord compression in myelofibrosis and PRV carries a high mortality rate.
  • Combined treatment modalities appear to offer a superior prognosis compared to single treatments.
  • This highlights the importance of considering aggressive, combined therapeutic approaches for better patient outcomes.

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...
Bone Marrow Sampling and Transplants01:22

Bone Marrow Sampling and Transplants

Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy the...
Secondary Spinal Cord Injury llI: Pathophysiology01:25

Secondary Spinal Cord Injury llI: Pathophysiology

Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
Differentiation of Common Myeloid Progenitor Cells01:15

Differentiation of Common Myeloid Progenitor Cells

Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
Spinal Cord01:26

Spinal Cord

The spinal cord, a critical component of the central nervous system, extends from the base of the brainstem to the lumbar region of the vertebral column. It is essential for maintaining physical stability and facilitating communication between the brain and peripheral parts of the body.