title: [Difficulties in diagnosis between simple cysts of the thymus and intrathymic dysembryomas. One case of a thymic tumor evolving during 40 years].
mesh_terms: D003560:Cysts / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008479:Mediastinal Neoplasms / Q000175:diagnosis; D008875:Middle Aged; D011859:Radiography; D013724:Teratoma / Q000175:diagnosis*; D013945:Thymoma / Q000175:diagnosis; D013950:Thymus Gland / Q000000981:diagnostic imaging; D013953:Thymus Neoplasms / Q000175:diagnosis*
vernacular_title: Difficultés du diagnostic entre kystes simples du thymus et dysembryomes intrathymiques. Un cas de tumeur thymique évoluant depuis 40 ans