Sonographic findings in three cases of carcinoma showing thymus‐like differentiation |
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| Authors: | Yayoi Yamamoto MD Keiko Yamada MD Noriko Motoi MD Yoshimasa Fujiwara MD Kazuhisa Toda MD Iwao Sugitani MD PhD Atsushi Kohno MD |
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| Affiliation: | 1. Cancer Institute Hospital, Diagnostic Imaging, , Koto‐ward, Tokyo 135‐8550;2. Japanese Foundation for Cancer Research, Pathology, , Koto‐ward, Tokyo 135‐8550;3. Cancer Institute Hospital, Ultrasound Imaging, , Koto‐ward, Tokyo 135‐8550;4. Cancer Institute Hospital, Division of Head and Neck, , Koto‐ward, Tokyo 135‐8550 |
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| Abstract: | Carcinoma showing thymus‐like differentiation (CASTLE) is a rare tumor of the thyroid gland or soft tissues of the head and neck. To our knowledge, there have been only a few reports concerning imaging findings of CASTLE. We report herein the sonographic appearances of three cases of CASTLE. Two tumors were located at the lower part of the thyroid and one had spread throughout the thyroid. Sonograms showed heterogeneously solid tumors without cystic components or calcification. The central part of the tumor was slightly hyperechoic compared with the peripheral part of the tumor. Histologically, the tumors were composed of a mixture of fibrous stroma and epithelial nests. © 2012 Wiley Periodicals, Inc. J Clin Ultrasound 41 :574–578, 2013. |
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| Keywords: | CASTLE sonography neck neoplasms thyroid |
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