A literature review was performed on Medline database (https://pubmed.ncbi.nlm.nih.gov/) with the MeSH terms “craniectomy” and “hydrocephalus” (55 results), or “hemicraniectomy” and “hydrocephalus” (7 results), accounting eventually for 12 retrospective patient series of interest (Supplementary Table 1) [4], [5], [6], [7], [8], [9], [12], [14], [15], [16], [17], [18]. Nine studies concerned TBI [5], [6], [7], [8], [12], [14], [15], [17], [18], 2 studies concerned MIS [4], [16], and 1 concerned