Pneumomediastinography.
D000328:Adult; D001984:Bronchial Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007037:Hypothyroidism / Q000000981:diagnostic imaging*; D008297:Male; D008477:Mediastinal Diseases / Q000000981:diagnostic imaging*; D008875:Middle Aged; D011012:Pneumomediastinum, Diagnostic; D011859:Radiography; D013952:Thymus Hyperplasia / Q000000981:diagnostic imaging*; D013953:Thymus Neoplasms / Q000000981:diagnostic imaging*; D014054:Tomography