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Abstract
IntroductionA chondrosarcoma originating from the hyoid bone is very rare. Here, we describe a case of low-grade chondrosarcoma of hyoid origin and discuss its preoperative imaging features, including those on positron emission tomography-computed tomography, and its recurrence rate.Case presentationA 42-year-old Japanese man noticed a mass in the right submandibular region of his neck. A hard 3.0 × 2.8 cm tumor was noted on the right side of his hyoid bone. The mass was immobile and moved with deglutition.ConclusionEven though radiographic studies, including positron emission tomography-computed tomography, were inconclusive, the cartilaginous tumor was surgically removed en bloc, and the tumor was diagnosed based on the results of pathological investigations. Close follow-up is recommended in such cases due to the potential for recurrences, because local recurrence occurred in 50% of the reported cases of grade one chondrosarcomas.
Highlights
A chondrosarcoma originating from the hyoid bone is very rare
Even though radiographic studies, including positron emission tomography-computed tomography, were inconclusive, the cartilaginous tumor was surgically removed en bloc, and the tumor was diagnosed based on the results of pathological investigations
Close follow-up is recommended in such cases due to the potential for recurrences, because local recurrence occurred in 50% of the reported cases of grade one chondrosarcomas
Summary
The present case did not involve union of the lesion to the tissue around it. The tumor and surrounding intact hyoid bone tissue were completely resected. Pathological results led to the diagnosis of a grade one tumor of low malignancy. Even though our radiographic studies, including PET-CT, were inconclusive, we surgically removed the cartilaginous tumor en bloc and the tumor was diagnosed based on the results of pathological investigations. Chondrosarcomas of hyoid origin have a high incidence of local recurrence and are sometimes metastatic. It seems necessary to closely follow-up the patient for a prolonged period of time. Treatment and follow-up of the patient described in this case report. All authors read and approved the final manuscript. Competing interests The authors declare that they have no competing interests.
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