The imaging diagnosis of immature teratoma / 实用放射学杂志

ABSTRACT

Objective To investigate the imaging manifestation of immature teratoma.Methods Imaging features of 9 cases of immature teratoma.confirmed pathologically were retrospective analysed.Results All 9 cases were male,age ranging from 1 to 38 years,mean age 1 9.5 years,AFP increased varying degrees in six cases .(1)3 cases (mean age 25.5 years)located in the anterior mediastinum which CT characteristics included the following featureslesions were projecting to one side,with irregular shape,obvi-ous necrosis,mild enhancement,wrap or oppression the blood vessels,one case with superior vena cava and head arm vein tumor em-boli and mediastinal lymph node metastasis.(2)6 cases (mean age 9.5 years)located in the pineal region and tricorn region,which MR finding were as followingcystic or solid placeholders,tow cases with small calcification or fat,solid part and the capsule wall enhancement significantly,4 cases with nodular enhancement.Conclusion Immature teratoma tends to occur in the middle struc-ture,and appears in children and young adults frequently,necrosis and cystic changes are seen commonly.CT and MR are of high val-ue in diagnosing immature teratoma.