Extraskeletal osteosarcoma in the parotid gland: A case report

Publication date: Available online 22 September 2017
Source:Auris Nasus Larynx
Author(s): Takao Hamamoto, Takashi Kono, Hiromi Furuie, Tsutomu Ueda, Sachio Takeno, Katsuhiro Hirakawa, Koji Arihiro
Extraskeletal osteosarcoma is a very rare tumor and accounts for 4–5% of all osteosarcomas. We describe a 47-year-old Japanese man who presented with a right parotid tumor. The patient underwent total resection with postoperative radiotherapy; however, the tumor recurred in the lung, whereupon he underwent chemotherapy and partial lung resection. After surgery, a hemorrhagic brain metastasis appeared; this tumor was extirpated to prevent bleeding into the brain, after which additional chemotherapy was administered. Nevertheless, the patient developed additional metastases and died 17 months after the total parotidectomy. This tumor was unique in that it arose in the parotid gland; this case provides an instructional example of an extremely rare manifestation of this type of tumor.



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