Chest cage deformities are structural abnormalities resulting from the development of bone and cartilage structures that form the chest wall in a manner different from their normal anatomical form. This condition may be congenital or become more pronounced over time during the growth and development process. Chest cage shape abnormalities can affect respiratory capacity, posture, and quality of life in some cases.

What are Chest Cage Shape Abnormalities?

Chest cage shape abnormalities are structural deformities that develop due to the deviation of the bone and cartilage structures forming the chest wall from normal anatomical development. These abnormalities may be present from birth or become more pronounced during the growth processes of childhood and adolescence. Chest cage deformities do not progress the same way for every individual; while some may only cause cosmetic differences, others can affect respiratory functions, posture, and quality of life.

Pectus Excavatum (Funnel Chest)

Characterized by the inward depression of the breastbone, this deformity is one of the most commonly observed chest cage shape abnormalities. The depression can be mild or pronounced. In advanced cases, symptoms such as reduced lung capacity, fatigue, and shortness of breath during exercise may occur.

Pectus Carinatum (Pigeon Chest)

This deformity results from the protrusion of the breastbone forward. It can be noticeable during adolescence. Generally, it does not seriously affect respiratory functions, but posture disorders and cosmetic concerns may be predominant.

Asymmetrical Chest Cage Deformities

This condition can arise from the different developmental rates of the right and left sides of the chest. It can occur alone or in conjunction with pectus excavatum and pectus carinatum. Depending on the degree of asymmetry, posture and musculoskeletal issues may develop.

Combined (Mixed) Chest Cage Deformities

In some individuals, a combination of depression in one part of the chest cage and protrusion in another may be present. Such deformities require more detailed evaluation, and it is important to establish a personalized follow-up plan.

What Causes Deformities in the Chest Cage?

Deformities in the chest cage occur as a result of the bone and cartilage structures forming the chest wall deviating from the normal anatomical order during the development process. Deformities can be shaped by a combination of genetic, developmental, and environmental factors. 

The main causes that may influence the formation of chest cage shape abnormalities are:

  • Congenital developmental differences:

The cartilage and bone tissue forming the chest cage acquiring a structure different from normal during prenatal development is one of the most common reasons for deformities. Such abnormalities are often noticed in childhood.

  • Genetic predisposition:

Chest cage deformities can be more prevalent in some families. Individuals with a family history may have an increased likelihood of similar shape abnormalities occurring.

  • Connective tissue diseases:

In certain diseases affecting the elastic structure of connective tissue, the chest cage bones and cartilage may be more flexible or weaker than normal. This condition can predispose the chest wall to shape changes.

  • Periods of rapid growth and development:

During the rapid height growth experienced in adolescence, disruption of harmony between bone and cartilage tissues can make existing deformities more pronounced.

  • Posture disorders:

Long-term habits of incorrect sitting and standing, especially in developing children, can negatively affect the structure of the chest cage and spine, triggering the emergence of deformities.

  • Musculoskeletal imbalances:

Imbalances between muscle groups around the chest, back, and shoulders can cause the chest cage to deviate from its normal form over time.

Accurate evaluation of the causes of deformities in the chest cage is important for monitoring and treatment planning. Therefore, early detection of the deformity and a personalized assessment can help prevent potential progressions.

At What Ages are Chest Cage Deformities Noticed?

Although chest cage deformities often develop due to congenital structural differences, they may not always be apparent in the early stages. The type and degree of the deformity, as well as the growth rate of the individual, directly affect when these shape abnormalities will be noticeable. In some cases, chest cage shape abnormalities are understood during infancy, while in others, they may gradually emerge over the years.

Infancy and early childhood are some of the periods when chest cage deformities can first be noticed. During this period, any depressions or protrusions in the chest cage can be mild and often catch attention during routine child examinations. 

School age and adolescence are the periods when chest cage deformities become most noticeable. Rapid height growth and bone development during adolescence may cause existing shape abnormalities to become more visible. During this process, chest cage depressions or protrusions may increase, and with heightened aesthetic awareness, families and individuals may more easily notice them.

In adulthood, chest cage deformities are usually evaluated due to cosmetic concerns, posture disorders, or respiratory complaints. In some individuals, deformities that are mild during childhood and adolescence may become more pronounced during adulthood or start to affect daily life.

How is the Diagnosis of Chest Cage Deformities Made?

The diagnosis of chest cage deformities is made through a thorough clinical evaluation. During the diagnostic process, the type and degree of the deformity, and its potential effects on the individual's daily life, are considered together. This evaluation follows similar basic steps for both children and adults.

The first step involves a detailed physical examination. The physician assesses the general structure, symmetry, and position of the chest bone. The degree of depression or protrusion in the chest wall is examined along with shoulder and back posture. The mobility of the chest cage during inhalation and exhalation is also observed.

Following the physical examination, imaging methods may be used if deemed necessary. These investigations help provide a more detailed assessment of the bone and cartilage structure of the chest cage and clarify the extent of the deformity. 

In some cases, respiratory function tests may be planned to assess the impact of the deformity on the respiratory system. These tests provide objective information regarding lung capacity and respiratory performance. 

Another critical step in the diagnostic process is evaluating the individual's symptoms and history. Detailed consideration is given to when the deformity was first noticed, whether it has progressed over time, and how it affects daily life. Growth and development processes are also included in the diagnostic evaluation for children.

How is Treatment for Chest Cage Deformities Undertaken?

The treatment approach for chest cage deformities is planned by considering the type and degree of the deformity, the age of the individual, and existing complaints. The same treatment method does not apply to every chest cage shape abnormality. Some deformities require only regular follow-up, while more comprehensive approaches may be considered in other cases. The primary aim of treatment is to monitor the progression of the deformity, assess potential functional effects, and maintain the individual's quality of life.

Observation and monitoring are commonly preferred approaches for mild deformities. In this method, the individual is regularly examined, and structural changes in the chest cage are monitored. 

Exercise and posture supports can be an important part of the treatment process. Exercises aimed at strengthening the chest, back, and shoulder muscles can help reduce posture disorders and support a more balanced appearance of the chest cage. 

Orthotic or brace applications may be preferred, especially in certain types of deformities such as pigeon chest. In growing individuals, external controlled pressure applied to the chest wall in suitable patients can limit the progression of the shape abnormality.

Surgical methods can be considered for individuals with more advanced deformities experiencing functional or significant cosmetic impact. Surgical intervention is not necessary for every patient and is only planned after thorough evaluation for suitable cases. The surgical decision-making process is approached by considering the effects of the deformity on the respiratory system and the general condition of the individual.

Frequently Asked Questions

Do Chest Cage Shape Abnormalities Correct Themselves?

Some mild deformities may remain unnoticeable during the growth process. However, most chest cage deformities do not completely correct themselves and require regular monitoring.

Does Pectus Excavatum Cause Shortness of Breath?

Pectus excavatum often does not show symptoms in most individuals. However, in advanced cases, it may affect lung capacity, leading to shortness of breath during exertion and a sensation of fatigue.

Can Chest Cage Deformities be Treated at Any Age?

Treatment options can vary according to age. While some methods may be more effective during childhood and adolescence, with proper evaluation, different approaches can also be planned in adulthood.

Do Chest Cage Deformities Cause Posture Disorders?

Shape abnormalities in the chest cage can accompany posture issues such as the inclination of shoulders and rounding of the back. This condition can lead to musculoskeletal complaints over time.

Creation Date : 15.01.2026
Update Date : 19.01.2026
Author : Yeliz YİĞİT
Communication : +905303120237
Contact Form Covid-19 Information Live Support