[A case of traumatic pneumatocele in a junior high school male student].
D000293:Adolescent; D003560:Cysts / Q000209:etiology*; D006801:Humans; D008171:Lung Diseases / Q000209:etiology*; D008297:Male; D013898:Thoracic Injuries / Q000150:complications*; D014754:Violence; D014949:Wounds, Nonpenetrating / Q000150:complications*