Contralateral multiple nodal metastases resulting from buccal mucosal squamous cell cancer have been successfully controlled by concurrent use of superselective intra-arterial carboplatin, hyperfractionated radiotherapy, UFT p.o. and hyperbaric oxygen therapy. Neck dissection should principally be applied to nodal metastases. However, our intraarterial chemoradiation therapy could control cervical lesions of patients who refuse neck dissection or who should avoid surgery under general anesthesia due to poor medical conditions.

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Epithelial-myoepithelial carcinoma (EMC) is a rare salivary gland neoplasm, pathologically characterized by a bilayer structure composed of clear myoepithelial cells that surround duct lining cells. This case report describes EMC of the deep lobe of the parotid gland.
The patient was a man in his sixties who had been aware of a left preauricular mass for one year, and was referred to our department. An elastic and slightly-hard mass in the left preauricular region, measuring 2.6 × 2.0 cm, was recognized. There was no facial nerve palsy and no palpable cervical lymph adenopathy. Ultrasonographic examination and magnetic resonance imaging showed a well-defined border mass with internal heterogeneity in the left parotid gland.
Based on the clinical diagnosis of tumor of the left parotid gland, excision of the tumor was performed while preserving the facial nerve. Histopathological examination revealed a biphasic cellular composition of inner layer cells with eosinophilic cytoplasm and outer layer cells with clear cytoplasm. Immunohistochemically, the inner cells were stained with cytokeratin (AE1/AE3) and the outer cells were stained with α-SMA and S-100. The tumor was diagnosed as EMC. Since extracapsular tumor invasion was observed in some part, postoperative radiotherapy of 46 Gy was administered. He has no evidence of disease 3 years after surgery.

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Enucleation and curettage are used to treat ameloblastoma. Generally, a rotary bar is used for curettage of bone. Therefore, performing curettage near the mandibular canal may injury the inferior alveolar nerve. Ultrasonic bone scalpels have been developed for neurosurgery and spinal surgery. These can selectively remove bone and prevent injuring important structures in soft tissues such as nerves and vessels, and enable minimally invasive surgery. In this report, we used an ultrasonic bone scalpel in the treatment of ameloblastoma of the mandible.
A 44-year-old female with right mandibular mass was referred to our department. We diagnosed the mass as ameloblastoma of the right mandible. The patient underwent enucleation and curettage with an ultrasonic bone scalpel under general anesthesia. She has been followed clinically and radiographically for 1 year with no signs of recurrence. An ultrasonic bone scalpel is considered a safe device in the treatment of ameloblastoma of the mandible.

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