“…The inflammatory exudate, partially or completely filling the subarachnoid space and/or the ventricular pathways, can lead to the development of persistent and progressive internal hydrocephalus (i.e., disturbance of the flow, reabsorption or production of the cerebrospinal fluid (CSF) that leads to an increase in volume occupied by the CSF in the CNS) [ 39 , 42 , 60 , 63 , 64 , 81 – 88 ]. Hydrocephalus is one of the most common complications of TBM that occurs in more than two-thirds of the cases [ 64 , 75 , 81 , 82 , 84 – 88 ]. In TBM, either the communicating or the non-communicating type of hydrocephalus can develop, with the former being more common [ 64 , 66 , 75 , 77 , 78 , 82 , 84 , 85 , 87 ].…”