students study about pectus excavatum that is a structural deformity of anterior thoracic wall. pulmonology

abnormally airflow amyloidosis anterior biology body breathing cage carinatum cartilage character chest class comparing comparison cross deformity disease education excavatum fibrosis genetics heart human illustration infographics knowledge lung male medical pectus poor problem pulmonary pulmonology restrictive rib section spine sternum structure student sunken symptoms thoracic torso vector wall