[Evaluation of steroid hormone receptors expression in nasopharyngeal angiofibroma]

Juvenile nasopharyngeal angiofibroma [JNA] is uncommon benign tumor that occur exclusively in the lateral portion of nasopharynx of adolescent boys. Sex selectivity at JNA may suggest relation its pathogenesis to hormonal changes of pubertal period .Some reports showed indirect evidence for the presence of androgen [AR], estrogen [ER], and progesterone [PR] receptors, in these tumors. The goal of the current study was to show direct evidence of sex hormone receptor expression in angiofibroma with use of immunohistochemical technique and to document which cells population express these receptors. 30 cases of juvenile nasopharyngeal angiofibroma and equal number of normal nasopharyngeal tissue were selected from archive of pathology department of mashhad Ghaem hospital then standard Immunohistochemical technique was performed in theirs paraffin blocks with ER, PR and AR immunohistochemical markers. Nuclear immunoreactivity was examined in stromal and endothelial cells of each case then these results analyzed with Pearson Chi-Square test. AR, and ER expression was seen in angiofibroma in 80% and 26.7% and in normal tissue 26.7% and 10% of cases respectively. We did not find any PR expression in both normal and tumoral tissue. Differences between AR expression in tumoral and normal tissue was meaningful but this correlation do not true about ER and PR. our results maybe agree with the significant role of androgen receptors in the pathogenesis of angiofibroma and benefit of antiandrongeic drugs for therapeutic response

[ correlation between helicobacter pylori infection and squamous cell carcinoma of larynx and hypopharynx]

From the most important laryngeal and hypopharyngeal cancer risk factors are smoking, alcohol and anemia. But reflux is one of the suggested etiologies. Pregnancy, Nonstroidal anti inflammation drugs and drugs decreasing the lower esophageal sphincter pressure will increase the reflux. Helicobacter pylories role in reflux formation is different due to the involved region and can also have a decreasing role and decline the rate of a series of esophageal and upper aero digestive system disease. This cross - sectional and case - control study was done in Qaem medical hospital, Mashhad during the years 1384 and 1385, for serum level detection of anti -H.pylori IgG and IgA antibodies in blood samples of both control and case groups. The variables were age, sex and serum test results. 45 patients [39 male and 6 female] and 42 controls [33 male and 9 female] were evaluated. 2 groups were matched for age and sex. Positive IgG and IgA results in patients in order was 3 person [6.6 percent] and 3 person [6.6 person] and in control group 26 person [61.9%] and 12 person [28.5%]. Result [P>0.001] was for healthy group showing the protective effect of H. Pylori against laryngeal cancer. In our study, control group with a meaningful difference was affected by H.Pylori infection. This can be due to a protective effect for H. Pylori against the laryngeal and hypopharyngeal malignancies. Prospective studies and simultaneously evaluation of reflux, H. Pylori infection and the regain of gastric location are suggested