Pectus excavatum is caused by what?

Written by Zhang Zhi Gong

Cardiothoracic Surgery

Updated on September 20, 2024

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The specific etiology of pectus excavatum is not completely clear, but there are mainly two types of pectus excavatum: the simple type and the complex type, which means it is accompanied by other diseases. Currently, pectus excavatum is somewhat related to congenital genetic inheritance. This is because pectus excavatum is related to many connective tissue disorders, and many patients with congenital diaphragmatic hernias, psychogenic subglottic stenosis, and underdeveloped bronchopulmonary tissues also present with pectus excavatum. Although these diseases do not directly cause pectus excavatum, the reasons for the development of pectus excavatum, whether directly related to connective tissue disorders or not, are somewhat related to genetic factors. Therefore, it is currently considered that pectus excavatum is caused by genetic factors and inheritance.

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Written by Zhang Zhi Gong

Cardiothoracic Surgery

1min 8sec

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Does pectus excavatum require surgery?

The decision on whether surgery is needed for pectus excavatum depends on the patient's age, the severity of the deformity, and the elasticity of the chest wall. If the patient is very young, under one year old, and the pectus excavatum is not very severe, we recommend a watchful waiting approach. In patients with pectus excavatum under one year old, it is possible that the condition is pseudopectus excavatum, which may improve as they grow and develop within the first year. However, not everyone improves, with about one third of the cases showing improvement within the first year. If the child is older than one year, the likelihood of improvement is basically none, and at this time, conservative treatment using a pectus excavatum suction cup can be considered. If adhered to effectively, the suction cup can have a certain effect for some patients with pectus excavatum. But if the patient is over three to five years old and the chest wall has matured, surgery should be considered. Therefore, for the vast majority of patients with pectus excavatum, surgery is a relatively definitive and immediately effective method.

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Written by Zhang Zhi Gong

Cardiothoracic Surgery

57sec

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Pectus excavatum is caused by what?

The specific etiology of pectus excavatum is not completely clear, but there are mainly two types of pectus excavatum: the simple type and the complex type, which means it is accompanied by other diseases. Currently, pectus excavatum is somewhat related to congenital genetic inheritance. This is because pectus excavatum is related to many connective tissue disorders, and many patients with congenital diaphragmatic hernias, psychogenic subglottic stenosis, and underdeveloped bronchopulmonary tissues also present with pectus excavatum. Although these diseases do not directly cause pectus excavatum, the reasons for the development of pectus excavatum, whether directly related to connective tissue disorders or not, are somewhat related to genetic factors. Therefore, it is currently considered that pectus excavatum is caused by genetic factors and inheritance.

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Written by Zhang Zhi Gong

Cardiothoracic Surgery

48sec

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Can funnel chest be cured?

In fact, many diseases cannot be completely cured, including the common cold, for which there is currently no way to completely eradicate it, meaning there isn't a medicine that, once taken, prevents one from ever catching a cold again. Of course, this has a lot to do with the mutations of the cold virus. However, pectus excavatum can be cured, and there are generally two methods of treatment for it: surgical and non-surgical. The surgical method is suitable for older patients with harder bones. Conservative treatment is appropriate for younger patients with more elastic rib cages, who can cooperate well, or whose family can supervise and support them through this non-surgical approach. Regardless, it is completely possible to cure pectus excavatum, and there are methods to do so.

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Written by Zhang Zhi Gong

Cardiothoracic Surgery

1min 13sec

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Minimally invasive surgery for pectus excavatum

Pectus excavatum minimally invasive surgery currently comes in two varieties. The first resembles a variation of the traditional Nuss procedure, which involves making a small incision under the patient's armpit and inserting a pre-shaped trapezoidal steel plate through this small hole to the back of the depressed breastbone. The steel plate is then flipped to push out the depression. Because it requires only a one to two centimeter incision on the patient, it is considered much less invasive compared to the traditional Nuss procedure which requires two incisions. There is also another type of minimally invasive surgery which involves bilateral incisions but does not require flipping the steel plate, thus avoiding damage associated with flipping and muscle disruption between the ribs. This is also considered a current minimally invasive surgical technique. Additionally, there is the recent Wang procedure, which is also minimally invasive, requiring only one incision and not necessitating access behind the breastbone. However, it is generally suitable only for younger patients with softer breastbones. For older adults, the Wang procedure might not be appropriate and further observation is required.

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Written by Zhang Zhi Gong

Cardiothoracic Surgery

1min 42sec

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Postoperative care for pectus excavatum

Pectus excavatum surgery involves implanting a metal plate in the patient's body; however, this type of metal plate cannot be welded to normal bones or muscles. It is only fixable using stainless steel wires or sutures. Therefore, postoperative care is crucial. Good post-surgical care significantly reduces the chances of the metal plate shifting. We recommend that patients lie flat on their backs for 3 to 5 days after the surgery, avoid bending, twisting their bodies, or rolling over in bed for a week. For a month, it's important for patients to keep their bodies straight and stand flush against a wall. Since the chest will be quite painful after the surgery, standing against a wall helps the patient maintain a proper posture. Otherwise, due to the pain, the patient may stoop forward, resulting in a hunched posture, which is unappealing and not good for the spine. Within two months post-surgery, the patient should avoid bending over to lift heavy objects as this can lead to uneven distribution of force that may cause the metal plate to shift. Intense physical activities should be avoided for three months. The patient should ideally rest in a supine position and avoid external injuries and contact or impact sports like basketball, soccer, or football. Generally, the metal plate should be removed 2 to 3 years after the surgery depending on the circumstances, so regular clinic visits are necessary to monitor the situation of the plate. If the patient experiences difficulty breathing or chest pain after being discharged from the hospital, they should immediately go to the nearest hospital to have their chest x-rayed to check the status of the metal plate.