Chondrosarcoma of the hyoid bone

Chondrosarcoma of the hyoid bone: a case of mistaken identity in the submandibular region

We describe a case of woman in her 60s who presented with a painless mass in her left submandibular region that biopsies and imaging suggested was a pleomorphic adenoma. Intraoperative findings showed a submandibular mass originating from the hyoid bone, and subsequent histopathological examination showed a grade 2 chondrosarcoma of the hyoid bone. Chondrosarcomas in the head and neck region are uncommon and presentations in the hyoid bone are very rare with only approximately 27 previously published cases. Presentations that pose as more benign pathology can cause diagnostic dilemmas for clinicians.

An Unusual Cervical Mass in the Hyoid Bone: Intermediate-Grade Chondrosarcoma

We describe a case of a 31-year-old woman with a chondrosarcoma of the hyoid bone. The patient presented with a mass in the left submandibular region. Fine-needle aspiration cytology suggested chondroma, but further imaging investigation with CT revealed an exophytic tumor originating from the body of the hyoid bone. Histopathology of the surgical specimen confirmed the diagnosis of a intermediate-grade chondrosarcoma. Chondrosarcomas account for 11% of all bone cancers. Primary sites of the head and the neck include the nasal cavity, the skull base, the maxilla, the mandible. Chondrosarcomas of the hyoid bone are very rare, with only 23 cases previously reported in the literature.

Chondrosarcoma of the hyoid bone - Report of a case and a literature review of the suitable treatment strategy

Chondrosarcoma is a rare malignant tumor occurring in the trunk and long bones. We present an extremely rare case of chondrosarcoma of the hyoid bone with clinical and pathological correlation and a literature review. We searched all cases of the hyoid chondrosarcoma in PubMed (MEDLINE) between 1990 and 2015. Eighteen cases were analyzed, including the present case. Most of them were low grade type. In 12 cases where intraoperative findings were recorded, no adhesion to the surrounding tissue was observed. Chondrosarcoma of the hyoid bone is usually low grade type, and there may be no invasion to the adjacent structures even if invasion is suspected by imaging findings. In order to preserve swallowing and laryngeal function, total hyoidectomy without laryngectomy should be indicated according to the intraoperative findings. Needle biopsy is an effective diagnostic technique, but open biopsy should be avoided to prevent the dissemination. To the best of our knowledge, this is the first presentation of hyoid bone chondrosarcoma with the investigation of intraoperative findings and pre-operative diagnostic modality.

A low-grade chondrosarcoma presenting as an unusual cervical mass in the hyoid bone: a case report

Introduction

A 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 presentation

A 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.

Conclusion

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.

Recurrent chondrosarcoma of the hyoid bone

Chondrosarcoma is a malignant tumor of cartilaginous origin, and the second most common primary malignant bone tumor in the United States. Only approximately 10% of chondrosarcomas occur in the head and neck region, and of these the hyoid bone is a rare site of involvement. This report describes such a case, as well as the radiographic features as seen by CT scan.