Post trans nasal surgery some patients can develop a CSF leak . If it is self limiting there is no surgery performed to close it.if it does not close then a sea lent material is used to close the area.
The lumboperitoneal shut they have put is to reduce the pressure in the brain.kindly consult your neurosurgeon as why you developed increased pressure.you could also consult a neurologist
at your place for an opinion as we would need to look at all your reports and labs. Kindly meet a endocrinologist
as well as very often post pituitary surgery hormonal
imbalances can occur and life long supplementation of the deficient hormone is required.