title: Thymic cyst presenting as an acute mediastinal mass.
mesh_terms: D000792:Angiography; D002305:Cardiac Tamponade / Q000000981:diagnostic imaging; D003560:Cysts / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006326:Heart Auscultation; D006801:Humans; D008297:Male; D008477:Mediastinal Diseases / Q000000981:diagnostic imaging*; D008875:Middle Aged; D013950:Thymus Gland / Q000473:pathology