These lesions may be classified as having low potential for malignancy when the tumor size is less than 1 cm and there is vascular invasion, or as having high potential for malignancy when tumors have histological grade 2 or 3, a mitotic index greater than 9, Ki67 greater than 30%, or are larger than 3 cm.
Las lesiones pueden ser clasificadas como de bajo potencial maligno tamaño del tumor menor de 1 cms y sin invasión vascular o de alto potencial maligno tumores de grado histológicos 2 ó 3, tamaño mayor de 3 cms, índice mitótico mayor de 9 o Ki 67 mayor de 30%.