man unbuttoned his shirt on his chest and placed his hand on sternum area because of severe pain behind his sternum or chest. conc

abdomen adult angina area attack behind body bronchi bronchiolitis bronchitis caucasian cause chest concept discomfort disease esophageal esophagus hand health heart heartburn infarction lung male man medical medicine motion myocardial pain pectoris people pericarditis person photo place pneumonia pressure problem severe shirt sign smoking squeezing sternum stomach symptom tightness unbuttoned young