手术是去除本病的惟一方法，但术后复发率很高。
The only treatment method is surgical operation, but the relapse rate is high.
观察术后复发率和无瘤间期及不良反应发生情况。
The recurrence rate, disease free interval, and adverse reaction after operation were observed.
部分肿瘤术后复发率较高，且再次治疗难度很大，预后不良。
The recurrence rate of some tumors is higher, the second or more orbital surgery are difficult, and the prognosis is bad.
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