RT Journal Article SR Electronic T1 Delayed presentation of syringomyelia after retrosigmoid craniectomy and resection of vestibular schwannoma: discussion of mechanisms JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e246714 DO 10.1136/bcr-2021-246714 VO 14 IS 12 A1 Egu, Chinedu Brian A1 Kumaria, Ashwin A1 Paterson, Alistair A1 Robertson, Iain YR 2021 UL http://casereports.bmj.com/content/14/12/e246714.abstract AB We present a case of syringomyelia following retrosigmoid craniectomy and resection of vestibular schwannoma complicated by Cerebrospinal fluid (CSF) leak, multiple infections and CSF diversion procedures. We believe this is the first reported case of syrinx formation after this type of surgery. Potential mechanisms by which the syrinx may have developed are discussed.