“…10,36 However, in large series of patients who underwent skull base surgery, including the ATPA, up to 15% suffered from a postoper-ative CSF leak. 5,14,15,19,20,24,30,31,33,35 Although other modified methods (e.g., multilayer sealing techniques using fat, fascia, and inlay techniques) have been developed, CSF leaks have not been completely resolved. 7,11,16,18,21,25,34 In recent years, skull base surgery via the endonasal endoscopic approach has demonstrated outstanding progress.…”