MRI Evaluation of Resection Margins in Bone Tumour Surgery

Table 2

Comparison of pathological evaluation and MRI evaluation.

N	Histopathological evaluation		MRI evaluation			Follow-Up (years)	Evolution
	Pathologist	Response to chemotherapy	Radiologist	Experienced orthopaedic surgeon	Unexperienced surgeon
1	R1	Bad	R1	R1	R1	2.9	NED
2	R1	No chemotherapy	R1	R1	R1	2.7	NED
3	R2	Bad	R2	R2	R2	1.6	Deceased
4	R0	Good	R0	R0	R0	2.9	NED
5	R0	Good	R0	R0	R1	3.1	NED
6	R0	Good	R0	R0	R0	2.8	NED
7	R2	Bad	R2	R2	R2	0.6	Deceased
8	R1	Good	R1	R0	R0	1.9	NED
9	R1	Good	R1	R1	R0	1.7	NED
10	R2	Good	R2	R2	R1	3.6	NED
11	R1	Bad	R1	R1	R0	1.1	NED
12	R1	Good	R1	R1	R2	1.2	NED

R0: in sano resection with adequate safe margins (margin > 1 mm); R1: possible microscopic residuals (margin between 0 and 1 mm); R2: macroscopic residual disease; NED: no evidence of disease.