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Angiosarcoma is a rare malignant mesenchymal tumor of vascular or lymphatic origin and represents less than 1% of all malignant tumors. Radiation therapy is a standard treatment in many head and neck cancer cases, but ionizing radiation is associated with radiation carcinogenesis including radiation-induced angiosarcoma. In this article, we report a rare case of radiation-induced angiosarcoma found in a 58-year-old female patient who was previously diagnosed with an odontogenic keratocyst and mucoepidermoid carcinoma.
Fig. 1
Proton emission tomography-computed tomography showing hypermetabolic lesion around right maxilla and nasal cavity.
Fig. 2
A. Preoperative photograph of angiosarcoma in palate. B. Postoperative photograph of angiosarcoma in palate after resection.
Fig. 3
A. Most of the cells show atypical spindle shape with hyperchromatic nuclei (H&E staining, ×200). B. This area shows vascular formation (H&E staining, ×200).
Fig. 4
A. The tumor cells are strongly positive for FLI-1 (×200). B. The tumor cells are strongly positive for INI-1 (×200).
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. DOI: 10.1148/radiology.216.1.r00jl02197. PMID: 10887248. Article
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https://doi.org/10.1038/356215a0
. DOI: 10.1038/356215a0. PMID: 1552940. Article