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Living with Osteosclerosis - Stanescu type

A rare form of osteosclerosis (hardened bone) with facial, tooth, and skull differences, present from birth.

Understanding Osteosclerosis - Stanescu type

Osteosclerosis, Stanescu type is a rare form of osteosclerosis, in which bones become denser than usual.

GARD describes it as Stanescu type dysostosis. Features include a flat face, bulging eyes, a small head, a large tongue, tooth differences, and bowed long bones. GARD lists onset as newborn.

Signs & symptoms

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

  • Dense bones (increased bone mineral density)
  • Flat face and underdeveloped cheekbones
  • Bulging eyes
  • Small head (microcephaly)
  • Missing teeth and enamel differences
  • Bowed long bones

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 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); 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
Which dental care options are available?
How should bone density and growth be monitored?
Would genetic testing help my family?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Dominant

GARD says changes in genes cause this condition. It is inherited in an autosomal dominant way, meaning one changed copy of the gene can be enough.

Genetic

Also known as: autosomal dominant osteosclerosis, stanescu type; craniofacial dysostosis with diaphyseal hyperplasia; craniofacial dysostosis-diaphyseal hyperplasia syndrome; dysostosis, stanescu type; stanescu osteosclerosis

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Osteosclerosis - Stanescu typeGARD ID 2016 · 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 Osteosclerosis - Stanescu type.

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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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