Actually, a portion of children with pectus excavatum can heal on their own, especially those who are newly born and discovered to have pectus excavatum. This is because children are curled up while in the mother's womb. In some cases, their hands and feet might be placed in front of the sternum, pressing it backward and inward, causing a deformity. However, once the mother gives birth and the child's limbs unfold, the pressure on the sternum is relieved. As the chest grows, it gradually returns to its normal shape, and these children with pectus excavatum can be cured.

On the other hand, another group of patients do not have pectus excavatum at birth, but develop a noticeable chest indentation as they grow older. These patients, when they are young, can also be treated with conservative methods, such as using a vacuum bell for pectus excavatum to gradually draw the indentation outward. With its stabilizing effect, as the child grows, the deformity can be slowly corrected.

Of course, there are also children who might have a more rapid skeletal development, and essentially become "set" in their ways. At this stage, they may require surgical intervention to treat the condition. In summary, a portion of pectus excavatum patients can be healed, while another portion requires active intervention and treatment.