CT and MRI findings of carcinoma showing thymus-like differentiation.
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.
Yoneda
Kenji
K
Department of Radiology, Kanazawa University School of Medicine, 13-1 Takara-machi, Kanazawa 920-8641, Japan.
Matsui
Osamu
O
Kobayashi
Takeshi
T
Gabata
Toshifumi
T
Minato
Hiroshi
H
Hirokawa
Mitsuyoshi
M
D002277:Carcinoma / Q000175:diagnosis*; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013953:Thymus Neoplasms / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed