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Minimal Residual Disease in Hematology

Detection and management of microscopic leukemia or lymphoma after treatment

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Hematoloji department. Book Appointment →

What is Minimal Residual Disease in Hematology?

Minimal residual disease, also called measurable residual disease, refers to small numbers of leukemia, lymphoma, or myeloma cells that remain after treatment but are below the threshold of routine morphology. Modern assays detect levels as low as one cell in a million.

Detection methods include multiparameter flow cytometry, polymerase chain reaction for fusion genes or immunoglobulin rearrangements, and next-generation sequencing. Each assay has different sensitivity and is selected by disease type and clinical question.

Status influences key decisions including continuation, intensification, or switching of therapy, eligibility for stem cell transplantation, post-transplant maintenance, and earliest detection of relapse, often months before clinical recurrence.

Symptoms

No symptoms when residual disease is microscopic
Detected only by sensitive laboratory testing
Periodic monitoring in remission
May influence ongoing therapy
Early warning of impending relapse

Risk Factors

High-risk genetic features at diagnosis
Slow initial response to induction
Older age and comorbidity
Specific subtypes such as Philadelphia-positive ALL
Post-transplant period with falling immune control

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • When timing of post-treatment monitoring is due
  • When MRD test results are positive after remission
  • Before deciding on transplantation or maintenance therapy
  • When new symptoms suggest relapse
  • Before stopping prolonged maintenance therapy

Treatment Methods

01
Multiparameter flow cytometry on bone marrow
02
Polymerase chain reaction for fusion genes
03
Next-generation sequencing for tumor-specific markers
04
Risk-adapted treatment intensification
05
Post-transplant maintenance therapy in MRD-positive patients
06
Pre-emptive therapy at first molecular relapse
07
Long-term surveillance schedules per disease type

Which Department to Visit?

You can visit our Hematoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Hematoloji Department

Let us help you

You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.