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KMID : 0613320040100010045
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Journal of the Korean Bone and Joint Tumor Soceity
2004 Volume.10 No. 1 p.45 ~ p.49
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Chondroblastoma of the Base of Fifth Metatarsal Bone associated with Secondary Aneurysmal Bone Cystic Change - A Case Report -
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Son Hyun-Jin
Jang Kyu-Yun
Lee Dong-Geun
Lee Sang-Yong
Kim Jung-Ryul
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Abstract
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Chondroblastoma is a benign chondroid-forming tumor usually originating in the epiphysis. The base of metatarsal bone contains neither an epiphysis nor a secondary ossification center and so is the rare site of chondroblastoma. Here, we present a case of chondroblastoma of the base of fifth metatarsal bone in 34-year-old man. Histologically, the osteoclast-like giant cells were abundant enough to simulate a giant cell tumor. And the chondroid intercellular matrix was intermixed but scanty. However, the background mononuclear cells showed irregular and indented nuclei with longitudinal clefts and positive immunoreactivity for S-100 protein , as the evidence of chondroblasts.
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KEYWORD
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Base of metatarsal bone, Chondroblastoma
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