Masaru Miyata

Peripheral facial palsy after sagittal split ramus osteotomy for setback of the mandible : A case report

The case of a 21-year-old man who underwent sagittal split setback osteotomy is described. He experienced facial nerve palsy 2 days after his surgery. However, after physical therapy and the administration of vitamins, he regained normal function within 3 months. The literature related to postoperative facial nerve paralysis is briefly reviewed.

Intraosseous lipoma of the maxilla: A case report

Abstract A case of intraosseous lipoma occurring in the maxilla of a 17-year-old boy is described.

Glomus tumor in the upper lip: A case report

A glomus tumor arising in the upper lip of a 54-year-old Japanese man is presented.

Cystic Basal Cell Adenoma of the Parotid Gland with an Adenoid Cystic Carcinoma-like Structure

Abstract Basal cell adenoma is a rare disease that was introduced as an entity by the World Health Organization in 1991. Histologically, this tumour can be easily confused with basal cell adenocarcinoma and the solid basaloid subtype of adenoid cystic carcinoma. In this report, immunohistochemical methods were used for accurate diagnosis. No reaction for cytokeratin 10/13 was observed. The distribution of cytokeratin 14 was localised in the outer layer of the tubular patterns and the duct-like structures of the adenoid cystic carcinomalike nest. The reactions for cytokeratin 18 and cytokeratin 19 were positive in the inner layer of tubular patterns. The immunoreactivity for S-100 protein closely corresponded with that for cytokeratin 18. The reaction for Ki67 was slight positive. These findings indicate that histopathological and immunohistochemical analysis might be useful discrimination techniques for the diagnosis, treatment, and prognosis of parotid gland tumours.

A case of maxillary malignant ameloblastoma with cervical lymph node metastases of thyroid cancer

Statements of the Problem: We report a case of malignant ameloblastomawith cervical lymph nodemetastases of thyroid cancer. Materials and Methods: A 61-year-old male who had a swelling in his left maxillary and had visited a nearby dental clinic one month before, was referred to our hospital with the initial diagnosis of an ulcer in the left maxillary gingiva. Our preoperative diagnosis was maxillary malignant tumor. The patient had been suffering from mild diabetes and high blood pressure, and had been taking oral medicine to control these conditions. Method of Data Analysis: Two biopsy procedures revealed that the lesion was a malignant tumor. Though the histological type was not identified, adenosquamous cell carcinoma or odontogenic malignant tumor was suspected. We diagnosed it as a maxillary malignant tumor T4N1MO stage IVA. Preoperative selective intra-arterial chemotherapy and radiation therapy were conducted twice for the maxillary tumor. 40mg/body of docetaxel and 100mg/body of cisplatin were given through arteria femoralis respectively by means of the Seldinger method. Radiation therapy of 50Gy was also conducted.Diagnostic imaging showeda lymphnodemetastases in thecervical region. Since thehistological typewas not identified, cervical dissectionwas conducted.Cervical lymphnodemetastases of thyroid cancer was found in one of 32 submandibular lymph nodes. After conducting preoperative selective intra-arterial chemoradiotherapy, an operation was conducted to resect the malignant tumor in the maxillary under general anesthesia. Incision was conducted along the Weber’s incision line. The left maxillary bonewas resected completely while the inferior wall of the orbit was preserved, and split-thickness skin grafting was conducted. Pathological analysis revealed malignant ameloblastoma. A gastric fistula was made for nutritional care during the treatment. Results of Investigation: Although it was difficult to identify the histological type of the tumor by pathological analysis, squamous cell carcinoma, ameloblastoma carcinoma, adenoid cystic carcinoma or malignant ameloblastoma was suspected. Thyroid cancer (papillocarcinoma) was found in one of 32 accessory nerve lymph nodes through cervical dissection. Immunostaining showed a positive reaction to thyrogloblin andTTF-1. Reexamination of the biopsy lesion revealed that the tumorwas infiltrating and increasing in number, while forming alveolar configurations. Comedo-like necrotic focuses were observed in the inside of some alveolar configurations. The tumor cells

Oral verrucous carcinoma: Report of three cases.

高分化型扁平上皮癌の1亜型である疣贅状癌は, 1948年にAckermanによって最初に報告された。日本においては, 1990年に浅海らが52例を報告している。われわれは, 頬粘膜, 舌, 下顎歯肉の3例の疣贅状癌を報告した。頬粘膜および舌の2例は切除し, 下顎歯肉の1例はレーザー切除と蒸散をおこなった。本腫瘍においては, 未分化転換がしばしば起こるため, 化学療法と放射線治療は一般的には行なわれない。われわれの3例では, 外科療法が選択され, 局所制御が得られた。

Clinical study of fifteen parotid gland tumors.

過去8年間に当科にて治療した耳下腺腫瘍の15例を検討した。これらは良性腫瘍または腫瘍類似疾患が11例と悪性腫瘍が4例であった。病理組織学的には, 多形性腺腫が8例, リンパ上皮性嚢胞が1例, 嚢胞を形成した良性リンパ上皮性疾患が1例, グロムス腫瘍が1例, 粘表皮癌が2例, 腺様嚢胞癌が1例, 腺癌が1例であった。これらの症例を臨床的に検討し, 臨床経過を報告する。

A case of angiomyoma in the lower lip and a review of the literature.

血管筋腫は1937年, Stoutが最初に報告した良性腫瘍である。血管筋腫は口腔領域に発生することはまれである。下唇に発生した血管筋腫の1例を報告し, 文献的考察を行った。30歳の男性が左側下唇の腫瘤を主訴として当科を受診した。同日, 局所麻酔下にて腫瘍摘出術を施行した。病理組織学的診断は血管筋腫であった。本邦における口腔領域においての本腫瘍の報告例は, 本症例を含めて65例であった。