First report of parotid gland metastasis in multiple enchondromatosis with secondary CHOSA (G-III)

Abstract

Chondrosarcomas constitute the second-most-frequent malignant bone tumors, representing about 10% of all malignant bone tumors. The most frequent localizations comprise the trunk, pelvis and limbs. Metastatic disease usually occurs in the lung; metastases to other localizations are seen occasionally. Manifestation in the head and neck area, either as primary tumor or metastasis, is very rare. A case of parotid gland metastasis in multiple enchondromatosis secondary chondrosarcoma (CHOSA) G-III of the left femoral bone is presented. A 79-year-old male patient reported to our clinic with a rapidly progressing mass in the left parotid gland. A superficial parotidectomy was performed and the entire tumor resected. Histopathological examination revealed nodular infiltration of the parotid by chondrosarcoma consistent with metastatic disease. Review of the literature shows that this is the first report of such a case.