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American Journal of Neuroradiology, Vol 19, Issue 7 1225-1228, Copyright © 1998 by American Society of Neuroradiology

ARTICLES

Carcinoma showing thymiclike differentiation (CASTLE tumor)

AT Ahuja, ES Chan, PW Allen, KY Lau, W King and C Metreweli
Department of Diagnostic Radiology and Organ Imaging, Faculty of Medicine, the Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, NT.

A 67-year-old woman had had a neck mass for 10 years, which recently increased in size. Sonographic, CT, and MR examinations showed a mass in the carotid and posterior spaces (triangle) extending from below the submandibular gland to the supraclavicular fossa, displacing the common carotid artery and the sternomastoid anteriorly. The mass was solid, noncalcified with lobulated outlines, hypoechoic on sonograms, of soft- tissue density on CT scans, isointense on T1-weighted MR images, hyperintense on T2-weighted MR images, and enhanced mildly after injection of contrast material on CT and MR studies. Histologic examination revealed a carcinoma showing thymiclike differentiation, a rare tumor of the neck and thyroid gland.




Copyright © 2008 by the American Society of Neuroradiology. Print ISSN: 0195-6108 Online ISSN: 1936-959X