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Living with Pericardial and diaphragmatic defect

A rare condition present from birth with a missing heart lining and a defect in the diaphragm that affects breathing.

Understanding Pericardial and diaphragmatic defect

Pericardial and diaphragmatic defect is a rare combination of a missing pericardium (the heart's lining) and a defect in the diaphragm.

The diaphragm is the muscle that helps with breathing. In this condition, part of it is missing on the left side, and the heart's lining is partly absent. Babies may have trouble breathing and underdeveloped lungs. Signs are noticed in newborns and infants.

Signs & symptoms

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

  • Missing part of the left diaphragm
  • Partly missing heart lining (pericardium)
  • Low blood oxygen
  • Breathing trouble in newborns
  • Underdeveloped lungs

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 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
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 surgery or breathing support might be needed?
How should the heart be checked?
Would genetic counseling help our family?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive

Changes in the genes (also called variants) cause this condition. It is autosomal recessive, which means a child inherits a changed copy of the gene from each parent.

Genetic

Also known as: pericardial and diaphragmatic defect syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Pericardial and diaphragmatic defectGARD ID 18780 · 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 Pericardial and diaphragmatic defect.

Explore the Pericardial and diaphragmatic defect blog

Explore research for Pericardial and diaphragmatic defect

Explore actively recruiting Pericardial and diaphragmatic defect studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Pericardial and diaphragmatic defect 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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