Giant thymoma.
D000293:Adolescent; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D011859:Radiography; D013945:Thymoma / Q000000981:diagnostic imaging / Q000209:etiology / Q000473:pathology / Q000601:surgery; D013953:Thymus Neoplasms / Q000000981:diagnostic imaging / Q000209:etiology / Q000473:pathology / Q000601:surgery