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Leiomyosarcoma of the Mandible : Report of a Case

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Abstract

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#ÃÊ·Ï#
Leiomyosarcoma is extremely rare in the oral cavity and especially in the mandible.
At first, the case of this report was diagnosed as odontogenic fibroma but after
approximately 3.5 years, it was diagnosed as leiomyosarcoma. Conventional radiograph of
the first time showed an ill-defined radiolucent lesion in the mandible. After local
recurrence, CT images showed a large irregular soft tissue mass with some necrotic
areas. These findings were not specific for leiomyosarcoma, but they suggested that this
lesion was a recurrent soft tissue sarcoma. Histopathological examinations using H & E
staining, immunohistochemical staining and Masson's trichrome staining confirmed this
case as leiomyosarcoma. Deciding its malignancy or benignancy, defining the tumor
extent and its relationship to the surrounding anatomic structures, and evaluating the
distant metastasis are more important roles of radiographic examination than finding out
the name of disease.

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Leiomyosarcoma; mandible;

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