Table 1.

Pathological scoring of pleomorphism, mitosis index, and invasion rate.

Score	Invasion	Pleomorphism	Mitosis
0	Absence of tumor cells in the dermis, and hypodermis	No	No
1	Penetration into dermis	Small, regular nuclei, and a shape	9–1
2	Infiltration into hypodermis	A moderate degree of difference in size, the shape of the nucleus, and hyperchromatic of the nucleus with the presence of nuclei	10–19
3	Penetration into subcutaneous muscle tissue	Severe degree of difference in nucleus size with hyperchromatic nuclei, and often with one or more nuclei identified	More than 20