Chondrosarcoma of the hyoid.

Two cases of chondrosarcoma of the hyoid bone are described. They were managed with surgical resection and postoperative radiotherapy. These patients are disease free at 26 months and 15 months respectively.     

Chondrosarcoma of the hyoid bone: imaging, surgical, and histopathologic correlation

Objectives/Hypothesis: Rare diseases must be diagnosed with great caution, so we present this case to familiarize clinicians with the presentation and treatment of chondrosarcoma of the hyoid bone, a rare disease. Study Design: Case report and review of the literature. Methods: We report one case of chondrosarcoma of the hyoid bone which presented with upper midline neck mass. In addition, we review the literature published in English regarding chondrosarcoma of the hyoid bone. Results: Chondrosarcoma of the hyoid bone is a rare disease of which only 14 cases have been reported until now. Patients with this disease have no sexual or racial preponderance, and most presented with a mass in the upper neck which has splotchy calcification in radiologic imaging without enhancement. The preferred treatment is wide excision. Conclusion: Because chondrosarcoma have indolent growth, are locally noninvasive, and appear encapsulated during operation, they may be mistaken for a benign mass and conservatively resected. On the other hand, incomplete tumor resection may lead to recurrence, which is associated with increased risk of dedifferentiation and histologic grading of tumor. Surgeons should approach this surgery with caution.     

Fracture of the hyoid bone

A patient complaining of dysphagia was diagnosed as suffering from a fracture of the hyoid bone. The fracture was fixed using the modern technique of tension band wiring. There was subsequent relief of the symptoms. A review of the literature and our perspective is included.     

Chondrosarcoma of the temporal bone

Eight patients with a chondrosarcoma of the temporal bone have been treated at the National Hospital for Neurology and Neurosurgery over a 16-year-period. Patients usually presented with symptoms and signs of lower cranial nerve palsies, though in most cases these resolved after surgery. This result, combined with the fact long-term survival can be achieved, makes surgical treatment of these tumours the best option, as the response to primary radiotherapy is uncertain. Surgical access is difficult, but an infratemporal approach is probably the most satisfactory. The use of post-operative adjuvant radiotherapy may provide some benefit. Long-term follow-up is necessary, and for this magnetic resonance imaging (MRI) is preferable to computed tomography (CT) scanning.     

Chondrosarcoma of the temporal bone

Chondrosarcoma of the temporal bone is a rare disease, with only 36 cases of this tumor having been reported in the English language literature. We report the case of a 52-year-old woman with myxoid chondrosarcoma of the temporal bone whose only symptom was progressive hearing loss. The tumor was removed using aspiration, mastoidectomy and tympanotomy, with retention of the jugular bulb. No recurrence has been noted 45 months after the operation. Diagnosis was established from histological examination of the surgical specimens. The clinical characteristics and management of this rare lesion are discussed.     

Morphology of the hyoid bone joint

Anatomical, histological and CT examinations were performed on the joint between the body and the greater comu of the hyoid. The existence of an articular surface, articular capsule and joint cavity revealed that in many cases there is a true atriculation not only in newborns but even in adults. The joint cavity appears as a cleft on X-ray, sometimes leading to the wrong diagnosis of fracture of the hyoid bone.     

Hyperextension fracture of the hyoid bone

A case of hyperextension fracture of the hyoid bone is presented. The management is discussed, with reference to the mode of injury, emphasising that symptomatic treatment only may be necessary. The literature is briefly reviewed.     

Chondrosarcoma of the greater cornu of the hyoid: a case report and literature review

We report an unusual case of a young woman with chondrosarcoma affecting the greater cornu of the hyoid bone. Only a handful of reports of primary chondrosarcoma involving the hyoid exist in the world literature. The case described presented as a swelling in the submandibular triangle, and as such posed a particular clinical and radiologic diagnostic challenge. Our subsequent surgical management of this rare entity comprised local excision followed by close observation, and is defined in the context of the existing literature. Two years after surgery, the patient remained free of tumor recurrence; she was subsequently lost to follow-up.     

Aneurysmal bone cyst of the hyoid.

Aneurysmal bone cyst is a rare lesion usually of the long bones, well documented in the literature. It is a cystic, osteolytic vascular tumour, replete with giant cells and fibrous septa, yet devoid of endothelial lining. It has been reported in the larynx and maxillary sinus. This appears to be the first report of an aneurysmal bone cyst occurring in the hyoid bone.     

舌骨在吞口因中的作用

吞咽是一项复杂的生理活动,是一个包括口、咽、喉以及食管各部肌肉不断激活、失活的运动过程。吞咽过程分为口腔准备期、口腔期、咽期和食管期。其中,咽期始于舌骨垂直和水平方向的运动,其异常会引起许多并发症,     

Osteonecrosis of hyoid bone and thyroid cartilage.

A 55-year-old man with carcinoma of the right pyriform fossa was treated with cobalt therapy. Subsequently, osteonecrosis of the right greater horn and the right superior horn of the thyroid cartilage developed, followed by pathologic fractures of the processes and spontaneous expulsion of the sequestrae.