MKI67 and sarcoma: For Ki67 no significant difference was found between the three histological groups, whereas MVD showed a significantly lower level in malignant melanomas (mean 12.6, SD 7.7) versus sarcomas (mean 21.8, SD 13.0) and carcinomas (mean 26.9, SD 20.4, p = 0.001) (Table 2).