title: Objective effect manifestation of pectus excavatum on load-stressed pulmonary function testing: a case report.
abstract: BACKGROUND
  Pectus excavatum is the most common congenital deformity of the anterior chest wall that, under certain conditions, may pose functional problems due to cardiopulmonary compromise and exercise intolerance.
  
  
  METHODS
  We present the case of an otherwise physically-adept 21-year-old Chinese sportsman with idiopathic pectus excavatum, whose symptoms manifested only on bearing a loaded body vest and backpack during physical exercise. Corroborative objective evidence was obtained via load-stressed pulmonary function testing, which demonstrated restrictive lung function.
  
  
  CONCLUSIONS
  This report highlights the possible detrimental synergism of thoracic load stress and pectus excavatum on cardiopulmonary function. Thoracic load-stressed pulmonary function testing provides objective evidence in support of such a synergistic relationship.
authors.affiliation: Ministry of Health Holdings, Singapore. jasoncys@live.com.sg.
authors.forename: Jason Yongsheng
authors.initials: JY
authors.lastname: Chan
authors.forename: Wei Liang
authors.initials: WL
authors.lastname: Huang