Carcinoma showing thymus-like differentiation (CASTLE) is a rare tumor that occurs in the soft tissue of the neck or in the thyroid gland. We report a case of CASTLE in a 54-year-old man presenting with hoarseness. Computed tomography (CT) and magnetic resonance imaging (MRI) showed a mass enclosing the right carotid artery with the shape of lobulation and invasion to the trachea. The mass was hypointense on T1-weighted imaging and, on T2-weighted imaging, showed a hyperintense periphery with isointense center relative to muscle. In dynamic MRI, the mass revealed gradual but slight heterogeneous enhancement from the periphery. Diagnosis was confirmed by histopathology.
Case Reports Radiation medicine. 2005 Sep;23(6):451-5.
CT and MRI findings of carcinoma showing thymus-like differentiation
胸腺样癌的CT和MRI表现 翻译改进
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PMID: 16389991
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Keywords：CT findings; MRI findings
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