The difference between rickets and pigeon chest.

Written by Mo Ming Hua

Pediatrics

Updated on September 26, 2024

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The difference between rickets and pigeon chest: Pigeon chest is a symptom of rickets; rickets is mainly caused by a lack of vitamin D and calcium, leading to disorders in calcium and phosphorus metabolism. During the acute phase of rickets, when skeletal changes occur, this condition can easily cause deformities in the patient's chest. The pigeon chest deformity is one of the symptoms of rickets. That is to say, pigeon chest is a symptom of rickets, not a disease itself.

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Written by Zhang Zhi Gong

Cardiothoracic Surgery

1min 8sec

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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.

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Written by Tong Peng

Pediatrics

1min 10sec

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How to recover from pigeon chest in children?

Childhood pectus carinatum is a common clinical condition, primarily caused by a deficiency in vitamin D leading to metabolic bone disease. Its characteristics are mainly manifested by the protrusion of the sternum and flattening of the chest walls on both sides. There are several treatment methods available: First, supplement children with calcium tablets and vitamin D, promptly administer these medications, and encourage exposure to sunlight and outdoor activities during the growth process, which is beneficial for bone calcium absorption. Additionally, the child should wear a brace specifically for pectus carinatum. The brace compresses the chest cavity, causing it to protrude upward. After wearing the brace for a period, the protruding chest can show improvement. If previous treatment methods are ineffective and severe sternal deformities still occur, surgical treatment at a specialized hospital may be necessary. In daily life, the child should be cautious about their posture and body position, avoiding rolling, bending, and similar actions as much as possible to facilitate a quicker recovery.

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Written by Li Jiao Yan

Neonatology

1min 10sec

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The difference between pigeon chest and funnel chest

Pigeon chest is a common thoracic deformity characterized by a protruding sternum, generally believed to be related to genetics, and most consider it caused by excessive growth of the ribs and costal cartilage. The deformity of the sternum is secondary to the deformity of the ribs. Funnel chest, on the other hand, refers to the inward concavity of the lower part of the sternum, along with the neighboring ribs and costal cartilages, forming a funnel-like appearance, a type of congenital thoracic deformity more common in males than females. The etiology of funnel chest is relatively complex; it might involve the gradual worsening of the sternum being pulled at various levels during growth and development. It could also be due to excessive growth of the ribs on both sides, pressing the sternum backward, leading to the formation of funnel chest. Some also consider it a sex-linked dominant hereditary disease. The thoracic deformity in pigeon chest primarily protrudes outward, whereas in funnel chest, it concaves inward, and the causes are also different.

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Written by Zhang Zhi Gong

Cardiothoracic Surgery

56sec

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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.

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Written by Yao Li Qin

Pediatrics

53sec

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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.