成人における乳様蜂巣発育についての組織学的研究

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To observe the development of mastoid cells in adult, the author made the sagittal sections of the temporal bones. The author studied macroscopically and histologically 42 cases including in ages from 18 to 75 years.The author classified the pneumatization of mastoid cells macroscopically and compared with Gotos method by radiographical film. Consequently, Gotos method was the best on judgment of the temporal bones pneumatization.It is said that pneumatisation of the temporal bone is developed by apposition and resorption of the bone. These two processes are most remarkable in the last stage of the fetal life and the child age. In these ages, resorption of the bone is lacunar resorption by osteoklasten. Therefore, the author observed histologically the mastoid cells and marrows in adult. The results were summarized as follows:1) In the young ages, the submucous coat was thick. The connective tissue was young and netted. There were found remarkably the new formation of capillary blood vessels and the infiltration of cells in submucous coat.Osteoblasts were found in 3 cases, but “osteokasten” were not found. But activity of the temporal bone was very strong.2) In 40-55 years old, the development of mastoid cells was stable comparatively.3) In the old ages, activity of mastoid cells became stable. But, in a part, there were found young connective tissues and new formation of capillary blood vessels. They were found in old aged persons, especially after 55 years old.Osteoblasts were found also in 3 cases and the apposition of the bones were found.The flat resorption by young connective tissues was found.4) They were all found in well-developed mastoid cells.5) The marrows were remained much in well-developed mastoid cells.As based on these findings, in the temporal bones, the resorption prosess in the preadolescence and postadolescence period was not the same.
社団法人日本耳鼻咽喉科学会の論文

著者

福崎隆
長崎大学医学部耳鼻咽喉科学教室

成人における乳様蜂巣発育についての組織学的研究

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