CSF leakage after Craniotomy.

In the month of April, my father aged 72 gone through Craniotomy for brain tumor removal (Atypical Meningioma, WHO grade II, 5.5*4*1.2 cm, 30% processed ) and after two weeks of surgery he has also taken radiotherapy (IMRT) for 30 days. But just after 1-2 weeks of surgery, CSF starts to leak out from the brain and getting accumulated in the skin near the operation site. The doctor suggested to create pressure through crape bandage over the head to limit the leakage of CSF. We did so for the next 2-3 weeks, but the problem was still persisting. After that the surgeon (who operated him) suggest to suck out the leakaged CSF using a syringe. And now, after the 4-5 months of surgery, we need to get the CSF sucked out every 20-25 days. The Doctor has told us that beacuse the tumor was between Dura matter and brian, hence the dura matter gets damages beacuse of tumor, also he says to avoid any further surgical procedure as my father is 72 years old, week, diabetic and have hypertension.