A Case of Intramuscular Hemangioma in the Masseter Muscle

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Hemangioma in the head and neck often arises in the cheek membrane, tongue, and lips. It is rarely generated in the masseter or trapezius muscle. We encountered a case of cavernous hemangioma in the masseter muscle accompanied by a venous stone. A 26-year-old female patient with a chief complaint of swelling in the right mandibular angle was referred to our department. The present clinical couse showed a 3-year history of repeated swelling of the right jaw every 2 or 3 months. Once the lesion became swollen, it was accompanied by sharp pain and the swelling continued for about one week. A soft mass measuring 30×17mm was accompanied by pain, and two hard masses were detected within the lesion. The ramera-like calcification was detected by simple X-ray examination and the lesion was diagnosed as hemangioma accompanied by a venous stone. MRI was useful for diagnosis. Moreover, angiography of the external carotid artery was performed and the findings comfirmed that the nutritional blood vessel was the facial artery.
耳鼻咽喉科臨床学会の論文