What is Pectus Excavatum?
Also known as "funnel chest" or "sunken chest," pectus excavatum is a structural abnormality resulting in a caved-in chest appearance. It occurs due to the abnormal growth of cartilage connecting the ribs to the breastbone, pushing the sternum inward. This congenital condition, present from birth, often becomes more noticeable during adolescent growth spurts. Severity varies from barely noticeable to a deep indentation impacting the chest cavity.
Causes and Associated Risk Factors
The exact cause is unknown but is thought to be from uncoordinated cartilage growth. A strong genetic link exists, with about 40% of those affected having a family history. Pectus excavatum can also be linked to conditions like Marfan syndrome, Ehlers-Danlos syndrome, Noonan syndrome, scoliosis, and Poland syndrome.
Symptoms and Complications
Symptoms can be physical and psychological, depending on the deformity's severity.
Physical Symptoms
Mild cases are mainly cosmetic. Deeper indentations can pressure the heart and lungs, causing shortness of breath, fatigue, chest pain, heart palpitations, and frequent respiratory infections.
Psychological and Self-Image Concerns
For many, especially adolescents, the visible deformity leads to low self-esteem, body image issues, social anxiety, and avoidance of activities exposing the chest. A hunched posture may also develop.
Diagnosis of Pectus Excavatum
Diagnosis involves a physical exam and medical history. Tests like chest X-rays or CT scans are used to calculate the Haller Index, measuring severity (above 3.25 is severe). An echocardiogram assesses heart function, pulmonary function tests measure lung capacity, and exercise stress tests evaluate heart and lung response to exertion. Genetic testing may be done if a connective tissue disorder is suspected.
Treatment Options for Pectus Excavatum
Treatment depends on severity. Mild cases without symptoms may not require treatment. Moderate to severe cases have non-surgical and surgical options.
Non-Surgical Treatments
- Vacuum Bell Therapy: A device creates suction to pull the breastbone forward, most effective for younger patients with flexible chests.
- Physical Therapy: Exercises and postural correction improve muscle strength and chest expansion.
Surgical Treatments
Surgery is for severe cases or when non-surgical methods fail. Main techniques include:
- Nuss Procedure: Minimally invasive, using a metal bar inserted to push the sternum outward, remaining for years.
- Ravitch Technique: Open surgery removing deformed cartilage and repositioning the breastbone with internal supports.
Comparison of Treatment Options
Feature | Vacuum Bell Therapy | Nuss Procedure | Ravitch Technique |
---|---|---|---|
Invasiveness | Non-invasive | Minimally Invasive | Open Surgery |
Best for... | Younger patients, flexible chest walls, mild to moderate cases | Adolescents, moderate to severe cases | More severe/complex cases, adults |
Recovery | Long-term daily use (12-15+ months) | A few days in hospital, several months activity restriction | Longer hospital stay, longer recovery and activity restriction |
Scarring | None | Two small side incisions | Larger central chest incision |
Duration of implant | N/A | 2-3 years | ~1 year |
Is Pectus Excavatum Dangerous?
Mild pectus excavatum is usually not dangerous. Severe cases can compress the heart and lungs, potentially affecting function, though there's no evidence of reduced life expectancy. Untreated severe cases can worsen symptoms over time. Surgical repair can improve symptoms and quality of life. Consult a healthcare professional for concerns.
Conclusion
Understanding pectus excavatum is key to managing this common congenital chest wall deformity. While causes are unclear, it has physical and psychological impacts. Treatments range from observation and non-invasive therapies to effective surgical options. For more information, visit the American College of Surgeons website, https://www.facs.org/.