What do you mean by pigeon chest?

Pigeon chest, medically known as pectus carinatum, is a deformity of the chest characterized by a protrusion of the breastbone (sternum) and ribs, giving the chest a bird-like appearance. This condition can be congenital and may result from abnormal growth of the cartilage that connects the ribs to the sternum. While it is often asymptomatic, some individuals may experience discomfort or respiratory issues, particularly during physical activity. Treatment options range from bracing to surgical intervention, depending on the severity of the condition.