Saburo Sekiyama

Peripheral calcifying epithelial odontogenic tumor

Most of the calcifying epithelial odontogenic tumors (CEOT) are central lesions of the jaws, but the CEOT occurs infrequently on the gingiva. A cases of peripheral CEOT arising in the right upper molar gingiva of a 31-year-old Japanese woman is presented. A direct communication between the overlying gingival epithelium and the tumor was found by examination of serial sections. As a result, it was thought that one of the sources of peripheral CEOT might be gingival epithelium with potential proliferative activity.

MEDIAN RHOMBOID GLOSSITIS ASSOCIATED WITH AMYLOID DEPOSITION

There are some controversies over the pathogenesis and clinical features of median rhomboid glossitis. A case of median rhomboid glossitis associated with amyloid deposition was presented. Clinically there was no organ involved in amyloid other than the tongue. It was suspected that median rhomboid glossitis occurred first and that amyloid was induced later.

Ameloblastoma suspected to have developed from a dentigerous cyst

SummaryA case is presented in which an ameloblastoma in suspected to have developed from a dentigerous cyst. The difference in development of the lesion was observed and compared roentgenographically after an interval of five years.

A minimized operation for advanced gingival carcinoma treated by neo-adjuvant chemo- and radiotherapy.

口腔癌に対し, 機能保存を目的とした化学療法および放射線療法の併用による治療後, 残存した腫瘍に対し通常初診時の占拠範囲に周囲の正常組織を含めて切除している。今回, 進展した歯肉癌症例に対しBMP療法および放射線の併用療法を施行し, 著しい効果を認めたが臨床的に腫瘍の残存が疑われたため, 初診時の腫瘍占拠部のみの切除にとどめ良好な結果をえた症例を経験した。摘出物の病理組織所見では, 原発巣部は瘢痕化し腫瘍組織の残存は認められなかったため併用療法が有効であったことになる。しかし高齢者や全身状態の不良な症例・進展例で, 臨床的に一部小範囲に腫瘍の残存が疑われる場合の手術に際しては, 口腔領域では容易に直視直達が可能であることからも, 臨床所見に基ずき切除範囲を狭める縮小手術の可能性を本例は示唆しているものと考えられ今後も十分な経過観察を行って行く予定である。

Functional oromandibular reconstruction using a sternum pectoralis major osteomyoctaneous composite flap

A case in which a partial defect of the mandible and an extensive defect of the adjacent soft tissue were reconstructed by using a composite osteomusculocutaneous flap of the pectoralis major with sternal bone, is presented.