岩手医科大学歯学部口腔病理学教室における病理組織検査の報告

―1995年度の集計―

抄録

Pathological examinations undertaken in 1995 at the Department of Oral Pathology, Iwate Medical University, were statistically reviewed.The number of biopsy meteriales examined amounted to 722 (including 83 requested from outside sources) from 577 cases. According to histological classifications, odontogenic benign lesions consisted of 5 ameloblastomas, 3 periapical cemental dysplasias, 20 dontomas, 1 squamous odontogenic tumor and l adenomatoid odontogenic tumor. Of nonodontogenic benign lesions, 33 were diagnosed as fibromas or fibroma like lesions, 10 as hemangiomas, 9 as papillomas, 8 as lichen planus, 7 as foreign body granulomas, 4 as pleomorphic adenomas, 3 as osteomas, 2 as lipomas, and 2were neurofibromas. The malignant tumors consisted of 53 squamous cell carcinomas, 3 adenocarcinomas, and 4 other types. The odontogenic cyst consisted of 49 radicular cysts, 19 primordial cysts and 8 dentigerous cysts. Of nonodontogenic cysts, 27 were diagnosed as postoperative maxillary cysts, 25 as salivary gland cysts, 3 as simple bone cysts, 3 as epidermoid cysts, 2 as dermoid cysts and 2 incisive canal cysts. Also found were 26 cases of hyperkeratosis (leukoplakia), 10 epithelial dysplasias, 17 chronic and localized hyperplastic gingivitis (epulis), 31 with Sjögren syndrome, and 60 having chronic inflammatory (glanulation) tissue.