Abstract
A case of low-grade intraosseous fibrosarcoma of the mandible in a 9-year-old girl is described. The patient underwent pre-surgical chemotherapy which was abandoned as unsuccessful after two cycles. Radical tumour resection and mandibular reconstruction with a titanium bar were performed 3 months after diagnosis. No adjuvant therapy was given and lymph node dissection was not performed. No signs of recurrences or metastasis have been observed after a follow up time of 3 years so far. This article is presented to document the rarity of fibrosarcomas in the jaws of children and emphasizes the possible changes in the appearance of radiological imaging under tumour progression.