title: Mediastinal mass in a sick infant.
mesh_terms: D000367:Age Factors; D003937:Diagnosis, Differential; D005471:Fluoroscopy; D006801:Humans; D007223:Infant; D008477:Mediastinal Diseases / Q000000981:diagnostic imaging*; D008478:Mediastinal Emphysema / Q000000981:diagnostic imaging; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging; D013950:Thymus Gland / Q000000981:diagnostic imaging*; D013952:Thymus Hyperplasia / Q000000981:diagnostic imaging; D013953:Thymus Neoplasms / Q000000981:diagnostic imaging