Helenbrown: It could very well be that whatever intervention is suggested will not be able to be scheduled until after your birthday trip. You didn't mention if your tumor is a particular type of tumor called a meningioma. If it is a meningioma, which is usually benign and slow growing, I would think your birthday trip would be fine unless the meningioma is pressing on a structure that is compromising your balance. You sure wouldn't want to suffer a serious fall. You should be able to talk to your doctor or his medical assistant for advice.