10.This is a squamous cell carcinoma. Note the disorderly growth of the squamous epithelial cells in these large nests with pink keratin in the centers.

10.图示鳞癌改变：多个大癌巢里鳞状上皮细胞不规则增生，癌巢中央为粉红色的角蛋白(癌珠)。