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The Institute of Chest Wall Surgery

What is malignant pectus excavatum?

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Top image: The heart is completely shifted to the left side of the chest cavity, which is a case of common pectus excavatum; Bottom image: The heart is located at the bottom of the indentation, not shifted to the left, and is clearly compressed, which is a case of malignant pectus excavatum.
Top image: The heart is completely shifted to the left side of the chest cavity, which is a case of common pectus excavatum; Bottom image: The heart is located at the bottom of the indentation, not shifted to the left, and is clearly compressed, which is a case of malignant pectus excavatum.

Pectus excavatum is a common chest wall deformity that usually causes no significant symptoms if the indentation is mild. This is because the heart shifts toward the left side of the chest — a compensatory mechanism that alleviates cardiac compression. However, the condition becomes dangerous if the anterior chest wall presses directly on the heart, preventing leftward displacement and even forcing the heart into the right chest cavity. This is referred to as “malignant pectus excavatum”.


Patients with malignant pectus excavatum often develop heart function abnormalities at an early stage, with clearly noticeable symptoms, and therefore require prompt surgical correction.


Malignant pectus excavatum: The heart is compressed by the anterior chest wall, causing early heart function abnormalities and noticeable symptoms; A. The patient's anterior chest wall exhibits an asymmetric pectus excavatum, characterized by a marked depression situated on the left chest wall; B. The depression directly compresses the heart, preventing it from shifting to the left; C. 3D image of the anterior chest wall; D. Postoperative chest wall appearance.
Malignant pectus excavatum: The heart is compressed by the anterior chest wall, causing early heart function abnormalities and noticeable symptoms; A. The patient's anterior chest wall exhibits an asymmetric pectus excavatum, characterized by a marked depression situated on the left chest wall; B. The depression directly compresses the heart, preventing it from shifting to the left; C. 3D image of the anterior chest wall; D. Postoperative chest wall appearance.

View surgical case studies of the heart being displaced to the right: Minimally invasive surgery for malignant pectus excavatum.


Apart from primary malignant pectus excavatum, there is also secondary malignant pectus excavatum, which is more commonly seen in cases of pectus excavatum following cardiac surgery or in recurrent cases after open pectus excavatum repair surgery. In these cases, severe adhesions keep the heart closely apposed to the depressed chest wall, preventing it from shifting left and causing direct compression that can seriously impair heart function.


Secondary malignant pectus excavatum (after congenital heart disease surgery): The depression directly compresses the heart, causing obvious cardiac deformation.
Secondary malignant pectus excavatum (after congenital heart disease surgery): The depression directly compresses the heart, causing obvious cardiac deformation.

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If you or your family member is experiencing concerns related to pectus excavatum, or wish to learn more about surgical correction options, please don’t hesitate to contact us for a complimentary consultation. Our expert team will address your inquiries, conduct a professional evaluation, and develop a personalized treatment plan tailored to your specific needs.

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