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Living with CD4+/CD56+ hematodermic neoplasm

A rare, fast-growing blood cancer that shows up as skin tumors and involves the bone marrow, mostly in older adults.

Understanding CD4+/CD56+ hematodermic neoplasm

CD4+/CD56+ hematodermic neoplasm is an aggressive blood cancer made of immature cells, once called blastic NK cell lymphoma.

Recent evidence suggests the cancer cells come from a type of white blood cell called a plasmacytoid monocyte. People usually have skin tumors and bone marrow involvement. It mostly affects older adults.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet. Its summary describes these features:

  • Tumors in the skin
  • Cancer cells in the bone marrow

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include blood and bone marrow specialists and cancer specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Blood and bone marrow specialists (hematologists); Cancer specialists (oncologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with HealthTree Foundation
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What tests will show how far the cancer has spread?
What treatment options are available?
Which specialists should be on my care team?

Quick facts

Symptoms usually startOlder Adult

GARD doesn't describe a cause for this condition yet.

Blood

Also known as: agranular cd4+ cd56+ hematodermic neoplasm/tumor; agranular cd4+ natural killer cell leukaemia; agranular cd4+ natural killer cell leukemia; blastic natural killer leukemia/lymphoma; blastic nk-cell lymphoma; blastic plasmacytoid dendritic cell

Patient organizations

Source: NIH GARD · CD4+/CD56+ hematodermic neoplasmGARD ID 10556 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with CD4+/CD56+ hematodermic neoplasm.

Explore the CD4+/CD56+ hematodermic neoplasm blog

Explore research for CD4+/CD56+ hematodermic neoplasm

Explore actively recruiting CD4+/CD56+ hematodermic neoplasm studies with HealthSpark.

HealthSpark

Find actively recruiting studies for CD4+/CD56+ hematodermic neoplasm with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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