title: Traumatic intrapericardial hematoma: an unusual cause of mediastinal widening.
mesh_terms: D000293:Adolescent; D001013:Aorta, Thoracic / Q000000981:diagnostic imaging; D006406:Hematoma / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D008297:Male; D008477:Mediastinal Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D010493:Pericarditis / Q000000981:diagnostic imaging / Q000209:etiology*; D011651:Pulmonary Artery / Q000000981:diagnostic imaging; D011859:Radiography; D013898:Thoracic Injuries / Q000150:complications*