CD44 and neoplasm: On evaluating the percentage of positive tumor cells expressing CD44, we found that in group 1, 13 cases showed 51-75% of positive cells, while in group 2, 14 cases showed 26-50% of positive cells, and in group 3 cases, three cases had 51-75% positive cells and another three cases had >75% positive cells, respectively, as shown in Table 4.