Epithelial migration on the tympanic membrane and external canal
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An ink dot staining method was used to examine epithelial migration in normal ears, in pathologic tympanic membranes, and in external auditory canal cholesteatoma. The direction of the epithelial migration was found to coincide with that of the vessels in normal ears. This suggested that epithelial migration was controlled by the vessels which supply the epidermal layer of the tympanic membrane. In pathologic tympanic membranes and external auditory canal cholesteatomas, epithelial migration was disturbed to various degrees and depended on the local conditions. In these pathologic conditions, the tympanic membrane showed less vascularization. Based on our findings, we believe that a poor blood supply is the major etiologic factor for the epithelial migratory disturbances of the tympanic membrane.
Key wordsEpithelial migration Tympanic membrane External canal Pathology Cholesteatoma
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- 1.Alberti PW (1964) Epithelial migration on the tympanic membrane. J Laryngol 78:808–830Google Scholar
- 2.Burnett CH (1877) The ear: its anatomy, physiology and diseases. Philadelphia. Cited in Alberti Google Scholar
- 3.Link R (1952) Über die Gefäßversorgung des Trommelfelles und des äußeren Gehörganges. Arch Ohren-Nasen-Kehlkopfheilkd 160:561–572Google Scholar
- 4.Litton WB (1963) Epithelial migration over tympanic membrane and external canal. Arch Otolaryngol 77:254–257Google Scholar
- 5.Litton WB (1968) Epithelial migration in the ear. Acta Otolaryngol [Suppl] (Stockh) 240:1–39Google Scholar
- 6.Saad EF (1977) The epidermis of the drumhead in some otologic conditions. Arch Otolaryngol 103:387–388Google Scholar