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Living with Cerebral gigantism-jaw cysts syndrome

A condition, also called nevoid basal cell carcinoma syndrome, that causes jaw cysts and skin cancers called basal cell carcinomas.

Understanding Cerebral gigantism-jaw cysts syndrome

Cerebral gigantism-jaw cysts syndrome, also called nevoid basal cell carcinoma syndrome (NBCCS), causes multiple jaw cysts (keratocysts) and basal cell skin cancers (BCCs).

Jaw cysts often begin in the second decade of life, and skin cancers usually start from the third decade onward. About 60% of people have a recognizable look, with a large head, a prominent forehead, and coarse facial features. Most have bone differences such as split ribs. Calcium deposits in a brain membrane (the falx) are present in more than 90% by age 20.

Signs & symptoms

GARD doesn't list a separate symptom list for this condition. Its summary describes these features:

  • Multiple jaw cysts (keratocysts)
  • Basal cell skin cancers
  • Large head (macrocephaly)
  • Prominent forehead (frontal bossing)
  • Coarse facial features and small white bumps (milia)
  • Bone differences like split ribs and wedge-shaped vertebrae

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
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
How often should my skin and jaw be checked?
Can genetic testing confirm the diagnosis?
How can I protect my skin and limit sun exposure?

Quick facts

GARD doesn't describe a cause for this condition in the text we have.

Also known as: cramer-niederdellmann syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Cerebral gigantism-jaw cysts syndromeGARD ID 1206 · 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 Cerebral gigantism-jaw cysts syndrome.

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