Objective To analyse the clinical characteristics of the intraspinal canal tumour, reducing the rate of the missed diagnosis/misdiagnosis.Methods The characteristics of the clinical manifestations, imaging features of the intraspinal canal tumour were analysed in 13 patients not diagnosed correctly through X ray or CT examination. Results 12 cases were treated by operation and 1 case was treated conservatively. 12 patients were followed up for 3 months~6 years 5 months,among whom 11 obtained excelle...