舌骨小角付近で茎突舌骨靭帯が部分的骨化した１症例

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  • A Case of Partial Ossification of the Stylohyoid Ligament Adjacent to Lesser Horn of the Hyoid Bone.

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W e encountered a patient who had partial ossification of the styloid ligament adjacent to lesser horn of the hyoid bone. This patient was a 65-year-old man who visited our hospital with chief complaints of pharyngeal and swallowing pain. The symptom did not disappear though he had received the treatment for TMJ arthrosis at another hospital.<BR>No findings were observed through the oral examination of the right tonsillar fossa, but X-ray examination revealed the existence of a radio-opaque lesion from the right mandibular angle to the hyoid bone. According to the clinical diagnosis of the fracture of the styloid process on the right side, the fragment was removed by the intra-extraoral approach.<BR>This removed fragment was shown to be partially ossified tissue of the styloid ligament by operating and pathological findings. It was a bone tissue with normal bone marrow and the formation of new bone was seen on both sides of the removed fragment.<BR>Within a week after operation, the symptom disappeared. At present, about a year after operation, the patient is symptomless.

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