粘液嚢胞の臨床病理学的検討

DOI 被引用文献15件 参考文献19件

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  • Clinicopathological Study on Mucous Cyst.

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The purpose of this study was to survey past clinical observations of oral mucous cysts. One hundred eighty-four cases were obtained from the files of the 2nd Department of Oral Surgery, School of Dentistry, Meikai University between January 1982 and September 1995. The mucous cysts were classified as extravasation or retention cysts. Furthermore, they could also be classified into 3 types: type I (extravasation cyst) (58.7%), 'poorly defined cyst'; type II (extravasation cyst) (39.7 %), ‘well-defined cyst surrounded by granulation tissue’; and type III (retention cyst) (1.6%), ‘well-defined cyst surrounded by epithelium’. About 60% of the extravasation cysts occurred within the first twenty years of life. The lower lip, tongue, and floor of the mouth were frequent sites of extravasation cysts. The findings relative to age, sex, and location were very similar between type I and II cysts. According to these clinical findings and histopathological findings, it is considered that types I and II represent different stages of the same lesion. On the other hand, all of retention cysts (type III) occurred in older patients of 50 to 60 years old. Two of them arose in the buccal mucosa and one in the upper lip. None of them arose in the prevalent sites of extravasation cysts. These findings suggested that the retention cyst and the extravasation cyst are completely different lesions from each other. Treatment was mainly surgical removal with recurrence of the lesion in only 13 of the 181 extravasation cysts. None of the retention cysts recurred following complete local excision.

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