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Living with Infantile myofibromatosis

A benign condition with firm lumps that are present at birth or appear in the first year of life.

Understanding Infantile myofibromatosis

Infantile myofibromatosis is a benign (noncancerous) condition with multiple well-defined, firm growths, usually present at birth or in the first year of life.

The growths are made of small, immature cells and more mature spindle-shaped cells. It can begin during pregnancy, at birth, or in infancy.

Signs & symptoms

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

  • Growths in bone (bone cysts)
  • Changes in skull or facial shape
  • Changes in the chest or intestines
  • Changes in hair
  • Changes at the ends of long bones
  • Intestinal blockage (less common)

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 brain and nervous system specialists, cancer specialists, genetic specialists and skin, hair, and nail specialists.

  3. Ask which tests can help

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

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Cancer specialists (oncologists); Genetic specialists (geneticists); Skin, hair, and nail specialists (dermatologists)
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 Children's Skin Disease 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
Where are the growths located in my child?
Do the growths need to be monitored or treated?
Does our family have an inherited form?

Quick facts

Symptoms usually startduring Pregnancy, at Birth, and as an Infant
InheritanceAutosomal Dominant, Autosomal Recessive

GARD lists autosomal dominant and autosomal recessive inheritance. It doesn't name a gene.

GeneticNeurologicalSkin

Also known as: congenital generalized fibromatosis; imf; infantile hemangiopericytoma; multicentric myofibromatosis; myofibromatosis

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Infantile myofibromatosisGARD ID 2998 · 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 Infantile myofibromatosis.

Explore the Infantile myofibromatosis blog

Explore research for Infantile myofibromatosis

Explore actively recruiting Infantile myofibromatosis studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Infantile myofibromatosis 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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