Experimental models of cholesteatoma: A review

Table 2 Articles using eustachian tube blocking model for cholesteatoma formation

Ref.	Year	Result
Kim et al[9]	2001	Cytokeratin expression increases with advancing stage of retraction pocket cholesteatoma
Wilmoth et al[10]	2003	Matrix metalloproteinases and tumor necrosis factor alpha may have a role in retraction pocket cholesteatoma
Tinling et al[12] (with combination of canal ligation)	2006	Basal cell keratinocytes’ cell division rate is much more in cholesteatoma