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Table 1 Clinical features of patients received non-surgical treatment

From: Gelfoam embolization or 125I seed implantation may be a more effective treatment than surgical treatment for giant benign sacral neurogenic tumors

Patient Gender Age Symptoms Category Primary tumor size (cm) Tumor size during treatment (cm) Treatment protocol Follow-up (year) KPS
A Male 55 Sacrococcygeal pain Sacral neurofibroma 15 × 14 × 11 19 × 18 × 16 Gelfoam embolization + implantation of 125I seeds 5 80
B Male 51 Low back pain and sacrococcygeal pain Sacral neurofibroma 12 × 10 × 8 13 × 10 × 8 Gelfoam embolization (3 times) 3 90
C Male 51 Physical examination Sacral schwannoma 12 × 9 × 6 13 × 10 × 6 Gelfoam embolization (3 times) 2 80
D Female 32 Sacrococcygeal pain Sacral schwannoma 12 × 11 × 9 17 × 12 × 10 No treatment 8 80
E Male 41 Low back and leg pain Sacral schwannoma 8 × 7 × 7 Withdraw Withdraw 4 80