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Table 1 Number of operated patients in different groups and their participation in a follow-up MRI performed 12 months after the surgery

From: Early developed ASD (adjacent segmental disease) in patients after surgical treatment of the spine due to cancer metastases

Group Group A Group B Group C Group D Group E Group F Group G
Number of operated patients (247) 36 118 7 16 9 38 23
Number of patients who had a follow-up MRI (194) 31 87 6 12 9 31 18