Difference between funnel chest and pigeon chest

Written by Zhang Zhi Gong

Cardiothoracic Surgery

Updated on September 01, 2024

00:00

00:00

Pectus excavatum and pectus carinatum are both types of deformities of the anterior chest wall, with pectus excavatum being the most common deformity, accounting for 90% of all anterior chest wall deformities; the incidence of pectus carinatum is only one-fifth to one-sixth of that of pectus excavatum. The shapes of pectus excavatum and pectus carinatum are also completely different. Pectus excavatum appears as if a funnel were placed on the chest, with the funnel receding backward and downward. Therefore, patients with pectus excavatum, when lying down, can observe a depression in the front of their chest, which is even capable of holding a cup of water placed within this funnel-like depression. On the other hand, the deformity in pectus carinatum protrudes forward. One caves inward while the other protrudes forward, thus these two shapes are completely opposite.

Other Voices

home-news-image

Written by Yao Li Qin

Pediatrics

53sec

home-news-image

How to determine if a baby has pigeon chest

Pectus carinatum, commonly referred to as pigeon chest, is a manifestation of the skeletal sequelae of rickets in children, where the sternum protrudes outward. To examine for pigeon chest, one commonly uses the hand to feel from top to bottom; if the sternum is noticeably protruding from the surface, then pigeon chest may be considered. This condition is a sequelae caused by a deficiency of Vitamin D. If this is the case, it is essential to visit a pediatric care, growth and development, or general pediatric outpatient clinic, where a pediatrician can confirm the diagnosis. If pigeon chest is confirmed, blood tests to measure Vitamin D levels should be conducted for infants. For older children, appropriate calcium supplementation and exercises to expand the chest should also be considered.

home-news-image

Written by Li Jiao Yan

Neonatology

49sec

home-news-image

What should be done about pigeon chest in children?

Childhood pigeon chest, also known as rickets, is caused by a deficiency in Vitamin D or calcium, leading to bone development issues. If pigeon chest is suspected, it is advised to visit a hospital for a detailed examination and receive treatment accordingly. If the pigeon chest is quite pronounced and there is significant deformity of the chest wall, rehabilitation or correction can be sought in relevant medical departments. Rickets is typically active before the age of 3, and stabilizes after this age. Treatment primarily focuses on addressing rickets in cases identified before the age of 3, and correcting deformities in cases identified afterwards.

home-news-image

Written by Zhang Zhi Gong

Cardiothoracic Surgery

1min 8sec

home-news-image

The differences between funnel chest and pigeon chest

Pectus excavatum and pectus carinatum are both types of chest wall deformities. Pectus excavatum is the most common form of chest wall deformity, accounting for over 90% of all anterior chest wall deformities, whereas pectus carinatum occurs much less frequently, roughly one-fifth the incidence of pectus excavatum. The main and most apparent difference is that, as the name suggests, pectus excavatum looks as if a funnel were placed in the chest, with the funnel pointing downwards and backwards. Thus, in patients or children with pectus excavatum, the sternum is indented inward and backward, pressing directly towards the spine. This indentation can compress the heart and lungs, potentially distorting and even displacing the heart to one side. In contrast, pectus carinatum involves the sternum protruding outward, resembling the chest of a chicken or a pigeon. Pectus excavatum is characterized by a backward indentation, while pectus carinatum protrudes forward—this is the most direct distinction.

home-news-image

Written by Li Jiao Yan

Neonatology

58sec

home-news-image

Late-stage symptoms of rickets pigeon chest

If a child has developed rickets and has already shown deformities such as pigeon chest, this indicates that the child is in the later stages of the active phase, meaning that a clear skeletal deformity has occurred. As the child ages, there may also be deformities in the lower limbs as the child begins to stand and walk, such as bowlegs or knock-knees, or a K-shaped leg deformity. Gradually, the child will enter the sequelae phase, which is more common in children over the age of two. In infancy, due to severe rickets, different skeletal deformities may remain without any other clinical symptoms. Blood biochemical indicators are normal, and X-ray examinations will show that the pathological changes at the epiphyseal ends of the bones have disappeared. Generally, no treatment is required, but if there are obvious deformities, corrective treatment may be necessary.

home-news-image

Written by Zhang Zhi Gong

Cardiothoracic Surgery

56sec

home-news-image

Difference between funnel chest and pigeon chest

Pectus excavatum and pectus carinatum are both types of deformities of the anterior chest wall, with pectus excavatum being the most common deformity, accounting for 90% of all anterior chest wall deformities; the incidence of pectus carinatum is only one-fifth to one-sixth of that of pectus excavatum. The shapes of pectus excavatum and pectus carinatum are also completely different. Pectus excavatum appears as if a funnel were placed on the chest, with the funnel receding backward and downward. Therefore, patients with pectus excavatum, when lying down, can observe a depression in the front of their chest, which is even capable of holding a cup of water placed within this funnel-like depression. On the other hand, the deformity in pectus carinatum protrudes forward. One caves inward while the other protrudes forward, thus these two shapes are completely opposite.