CT Diagnosis and Differential Diagnosis of the Tumors of Germ Cell Origin in the Mediastinum:A Report of 32 cases / 实用放射学杂志

ABSTRACT

Objective To summarize CT features , benign and malignant differential main points of the tumors of germ cell origin in the mediastinum.Methods 32 cases with pathologically confirmed the tumors of germ cell origin in the mediastinum were retrospectively analysed.Results Of 32 cases,26 were benign tumors,including cyst mass in 10,solid mass in 9 and cyst-solid mass in 7.6 cases were malignant tumors, including seminoma in 1 ,endodermal sinus tumor or yolk sac tumor in 1,embryo cell casinoma in 1 and malignant teratoma in 3 .Typical benign teratoid tumors appeared as water to soft tissue density masses,with defined margin,fat or calcification inside the tumors,around tissues were compresed by tumors,the malignant tumors appeared as lobular or irregular masses and around organ invaded.Conclusion CT is a reliable method for the diagnosis of the tumors of germ cell origin in the mediastinum accurately.Malignant tumors of germ cell origin in the mediastinum are difficult differentiation from other mediastinal malignant tumors.