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Journal of the Korean Society of Plastic and Reconstructive Surgeons 2009;36(2):237-241.
Published online March 1, 2009.
A Case Report of Osteochondroma Occuring on the Right Zygoma Body.
Sang Min Woo, Jin Woo Kim, Han Kyoung Shin, Jae Hak Jung, Young Hwan Kim, Hook Sun
Department of Plastic and Reconstructive Surgery, Busan Paik Hospital, Inje University, Busan, Korea. woos78@hanmail.net
An osteochondroma, also known as osteocartilaginous exostosis, is a common bone tumor, but rarely occurs in the facial bone, especially in the zygoma body. Because most of the craniofacial bones develop from intramembranous ossification, osteochondromas are relatively infrequent in mesenchymal bones of the head and neck. The osteochondroma of the facial bone is a slow growing, painless mass, and causes facial asymmetry. In spine and other extremities, it rarely changes malignant, but until now, there is no evidence of malignant change in facial bone. We herein describe a rare case of osteochondroma occurring on zygoma body with review of the literature. METHODS: A 50-year-old male has painless, slowly growing mass on a right cheek for several years. For a diagnosis, CT and whole body bone scan were done and a diagnosis, osteochondroma was made. The tumor was removed with osteotome under general anesthesia.
Radiography showed a well-defined calcified mass attached to the anterior aspect of the right zygoma body. And pathologic exam showed degenerative chondocyte and cancellous bone. As a result, this appearance is that of an osteochondroma.
An osteochondroma is a common bone tumor, but rarely occurs in the facial bone. To the authors knowldege, this is the first case of osteochondroma occuring on zygoma in korea, body. For this case, we reviewed literature related to this topic.
Keywords: Osteochondroma; Zygoma body
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