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Frontal (A), and profile (B) views demonstrating the right-sided facial mass.
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Ill-defined radiolucency of the right mandibular ramus with cortical destruction are apparent on panoramic radiograph.
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CTscan has demonstrated the presence of a solid heterogeneous mass of 5.5 cm centered on the right mandibular branch, with osteolysis,extending to the region.
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It extends to the region of the parotid gland, with erosion of the upper edge of the mandibular canal (Fig. 3).
A. Alveolar rhabdomyosarcoma showing a giant multinucleated tumor cell with hyperchromatic nuclei and eosinophilic cytoplasm. B. The lesional cells stained positive for myogenin. C. The lesional cells stained positive for desmin.
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Histological examination revealed large round cells with hyperchromatic nuclei and an eosinophilic cytoplasm (Fig. 4A); further immunohistochemical studies were conducted to further classify this lesion. Neoplastic cells were positive for myogenin (Fig. 4B) and desmin (Fig. 4C). The histological analysis of the resection sample was consistent with the results observed during the initial biopsy (Fig. 4A-C).
A. Intraoperative photo showing a mandibular angle mass arriving at the parotid gland. B. Operative part of a hemimandibulectomy with an immediate macroscopic postoperative aspect of an alveolar rhabdomyosarcoma.
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