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Living with Gigantiform cementoma

A rare genetic bone disease with painless, slowly growing jaw lumps that can change the shape of the face.

Understanding Gigantiform cementoma

Gigantiform cementoma is a rare genetic bone disease with several benign growths in the jaws.

The growths are painless and noncancerous and expand slowly over time. They can cause severe changes to the face. It usually shows up at an early age and often occurs along with long bone differences and fractures. Incomplete surgical removal may lead to faster growth of the part that remains.

Signs & symptoms

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

  • Painless growths in the jaws
  • Jaw growths that expand over time
  • Facial changes in shape
  • Long bone differences
  • Bone fractures

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 bone and joint specialists, cancer specialists and genetic specialists.

  3. Ask which tests can help

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

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Cancer specialists (oncologists); Genetic specialists (geneticists)
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 rare disease patient organizations for support
  • 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 is the best plan for monitoring or removing the jaw growths?
Should my long bones be checked for problems or fracture risk?
Could family members be affected?

Quick facts

Symptoms usually startfrom Childhood to Adulthood
InheritanceAutosomal Dominant

Changes in genes cause this condition. It is inherited in an autosomal dominant way, which means one changed copy of a gene can be enough. GARD does not name the gene.

Genetic

Also known as: cemental dysplasia, periapical; cementomas, familial multiple; familial multiple cementoma; familial ossifying fibroma; gigantiform cementoma, familial; hereditary ossifying fibroma (disease)

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Gigantiform cementomaGARD ID 17713 · 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 Gigantiform cementoma.

Explore the Gigantiform cementoma blog

Explore research for Gigantiform cementoma

Explore actively recruiting Gigantiform cementoma studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Gigantiform cementoma 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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