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KMID : 0858520110150020176
Journal of the Korean Society of Magnetic Resonance in Medicine
2011 Volume.15 No. 2 p.176 ~ p.180
Bilateral Extraocular Muscle Metastasis of Nasal Rhabdomyosarcoma Mimicking a Thyroid Associated Orbitopathy: A Case Report
Shin Jin-Ho

Lee Jeong-Hyun
Lim Hyun-Kyung
Lee Ha-Young
Park Jee-Won
Baek Hye-Jin
Choi Young-Jun
Ahn Jin-Hee
Baek Jung-Hwan
Abstract
Metastases to the orbit usually affect the intraorbital fat and bone than the extraocular muscles. Metastasis to the extracoular muscles commonly occurs unilaterally, and diffuse enlargement of the bilateral extraocular muscles due to metastasis is extremely rare. In this report, we will describe a case of diffuse metastasis to the bilateral extraocular muscles from nasal rhabdomyosarcoma masquerading as thyroid associated orbitopathy. We will also discuss about the MR imaging findings helpful for differential diagnosis from thyroid associated orbitopathy.
KEYWORD
Rhabdomyosarcoma, Alveolar, Extraocular muscle metastasis, Magnetic resonance imaging (MRI), Thyroid associated orbitopathy
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