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Table 2 Patients' characteristics.

From: Treatment results and prognostic factors of pediatric neuroblastoma: a retrospective study

Variable No %
1. Age at diagnosis:   
a) <1 year 12 22.6
b) ≥ 1 year 41 77.4
2. Sex   
a) Males 35 18
b) Females 66 34
3. Stage   
a) III 13 24.6
b) IV 36 67.9
c) IVS 4 7.5
4. Risk group   
a) Low Risk 4 7.5
b) Intermediate Risk 13 24.6
c) High Risk 36 67.9
5. Primary site   
a) Adrenal glands 46 86.8
b) Paraspinal 4 7.5
c) Pelvis 2 3.8
d) Mediastinal 1 1.9
6. Metastatic sites   
a) No metastasis 13 24.5
b) Bone marrow 18 34
c) Bone marrow and bone 14 26.4
d) Bone marrow and brain 2 3.8
e) Bone marrow and lung 1 1.9
f) Bone marrow, bone and liver 1 1.9
g) Bone marrow, lung and liver 1 1.9
h) Bone 1 1.9
i) Liver 1 1.9
j) Subcutaneous nodules 1 1.9
7. MYCN amplification   
a) yes 11 20.8
b) no 42 79.2
8. Local Radiotherapy administration   
a) yes 25 47.2
b) no 28 52.8
TOTAL 53 100