preview

Cholesteatoma Case Study

Best Essays

RESULTS 40 operative specimens were taken and examined histopathologically and immunohistochemically for the role of epidermal growth factor in cholesteatoma in 2 groups of patients. One group consisted of 20 pediatric patients, their ages ranged from 8 to 18 years with an average of 13.63±3.53 years. The other group was the adult group and consisted of 20 patients with an age range between 21 up to 48 years and an average age of 30.63+9.08 years. In the pediatric group the males were 65%, while the females were 35%. On the other hand in the adult group, males were 40% and females were 60% Histopathological examination Microscopic examination of the collected specimens revealed strips of stratified squamous epithelium devoid of rete …show more content…

In the perimatrix: EGF positivity in the perimatrix of the pediatric cases was significantly higher than that found in the adult cases ( p< 0.001). EGF positivity in children ranged between 33.0 – 49.0 with a mean of 38.8±4.82. While in adults it ranged between 22.0 – 29.0 with a mean of 25.40±2.11 (Fig 3 A, B). ( (Table 1) Discussion Cholesteatoma is characterized by cellular hyperproliferation. The pathobiologic reason for the observed increase in proliferation of cholesteatoma is not completely understood. Acquired cholesteatoma is more aggressive in children. The reason for the difference in behavior is still unclear .Several studies have sought a physiopathological explanation for this finding .According to Quaranta, the explanation lies in the cholesteatoma perimatrix. Following up this hypothesis, he reported that the number of mononuclear cells infiltration (plasmocytes, lymphocytes, macrophages, granulocytes and giant cells) in the perimatrix to be greater in children than in adults with evidence of enzyme-collagenase activity .[13] Analysis of the expression of MIB1 (a monoclonal antibody marker of cell proliferation) in child and adult cholesteatoma and within the external auditory canal skin was performed ; the proliferation index was normal in the latter, elevated in the adults, and relatively higher in children .[14] We used

Get Access