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Living with Multifocal lymphangioendotheliomatosis-thrombocytopenia syndrome

A rare condition of the lymph system with growths in blood vessels of the skin and gut and low platelets.

Understanding Multifocal lymphangioendotheliomatosis-thrombocytopenia syndrome

Multifocal lymphangioendotheliomatosis-thrombocytopenia syndrome is a rare condition that affects the lymphatic system.

It causes abnormal growths in blood vessels of the skin, the digestive system, and sometimes other parts of the body. The growths look like red-brown patches that can be a few centimeters wide. They can cause problems with blood clotting. Signs are seen in the newborn period or infancy.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Red-brown patches or bumps on the skin
  • Low platelet count (thrombocytopenia)
  • Bleeding in the gut
  • Bleeding inside the skull
  • Differences in the lungs
  • Differences in the digestive tract

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.

  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)
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 Platelet Disorder Support Association
  • 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
How is the platelet count monitored?
Which specialists, such as a blood doctor, should be involved?
What treatment options exist for the growths?

Quick facts

Symptoms usually startNewborn and as an Infant

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

Blood

Also known as: cutaneovisceral angiomatosis-thrombocytopenia syndrome; cutaneovisceral angiomatosis, thrombocytopenia syndrome; dkfzp434l132; malt1 wt allele; mlt; mlt - multifocal lymphangioendotheliomatosis with thrombocytopenia

Patient organizations

Source: NIH GARD · Multifocal lymphangioendotheliomatosis-thrombocytopenia syndromeGARD ID 10467 · 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 Multifocal lymphangioendotheliomatosis-thrombocytopenia syndrome.

Explore the Multifocal lymphangioendotheliomatosis-thrombocytopenia syndrome blog

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HealthSpark

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  • 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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