CD44 and neoplasm: In addition, the tumor characteristics were investigated considering the extent of expression of Ki-67 and CD44. Table 3 presents the results obtained from the relationship between tumor characteristics and the extent of expression of Ki-67 and CD44. According to the results mentioned in Diagram 1 and Table 3, no significant relationship was found between demographic characteristics and tumor features considering the extent of expression of Ki-67 and CD44.