title: [An unusual diagnosis].
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004417:Dyspnea / Q000209:etiology; D005260:Female; D006338:Heart Neoplasms / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D008944:Mitral Valve Insufficiency / Q000175:diagnosis; D009232:Myxoma / Q000150:complications / Q000175:diagnosis*
vernacular_title: Een zeldzame oorzaak