Eight cases were attributed to the idiopathic type. 16 cases (80%) improved after operation. four factors were analvzed to evalluate their status as a prognostic guide: age, duration fo syndrome, severity before operation and precipitating factors.
Eight cases were attributed to the idiopathic type. 16 cases (80%) improved after operation. four factors were analvzed to evalluate their status as a prognostic guide: age, duration fo syndrome, severity before operation and precipitating factors.
影响愈后的一些因素包括：病人的年龄、症状存在的时间、术前症状的严重度及致病的原因的有无，我们就这些因素加以探讨。