New trends in the surgical management of soft tissue sarcoma: The role of preoperative biopsy

Table 1 Federation of the French Cancer Centres histological grading criteria

Differentiation (score)	Necrosis (score)	Mitotic count (score)
Well (1)	Absent (0)	n < 101 (1)
Moderate (2)	< 50% (1)	n = 10–191 (2)
Poor (anaplastic) (3)	≥ 50% (2)	n ≥ 201 (3)

¹Number of mitoses per 10 high power fields.

After summing the three scores, grade 1 is defined as a total score of 2 or 3; grade 2 as a total score of 4 or 5; and grade 3 as a total score of 6 to 8.