[The relationship between cyclin D1 and hypopharyngeal carcinoma].

Objective: To study the relation ship between Cyclin expression and the biological behavior in 53 cases of hypopharyngeal squamous cell carcinoma.

Method: Immunohistochemical (sp). method was used to detect the expression of cyclin D in 53 cases of hypopharyngeal squamous cell carcinoma and 11 cases of normal adjacent epithelium.

Result: Positive expression for Cyclin D1 in hypopharyngeal squamous cell carcinoma was found in nuclear. The expression of cyclin D1 in the tumorous cell was significant hig her than in normal epithelium. Cyclin D1 expression was related to T grade and primary site, which correlation coefficient were 0.345 and -0.386 respectively. The highest positive rate of Cyclin D1 expression was in pyriform sinus.

Conclusion: Cyclin D1 expression was related to T grade and primary site positively.