Abstract
Originally described by Dahlin et al. in 1984, fibrocartilaginous mesenchymoma (FCM) constitutes a rare bone tumor of children and adolescents that mainly affects the long bones. A spinal location of this tumor is exceptional. Only two previous instances of vertebral FCM have been reported in the current literature, and both occurred in young adults. We report the case of a 9-year-old boy with backache caused by a neoplasm that involved the Th12 vertebra treated with tumor excision. Histopathological diagnosis was confirmatory of FCM. During a follow-up period of 2 years, there was no evidence of disease progression. Our patient, thus, represents the first case of FCM occurring in a child. Given the rarity of spinal FCM, there are no guidelines about its management. However, treatment of this neoplasm seems to be mainly surgical aiming at total removal of the lesion, if feasible, as FCM may recur locally.
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