RT Journal Article SR Electronic T1 Cavernous sinus and jugular thromboses, base of skull osteomyelitis and cranial nerve palsies: catastrophic complications of sphenoid sinusitis JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e253496 DO 10.1136/bcr-2022-253496 VO 16 IS 2 A1 Wen-An Jih A1 Tej Shukla A1 Jennifer Gillespie A1 Paul Robert Chapman YR 2023 UL http://casereports.bmj.com/content/16/2/e253496.abstract AB Sphenoid sinusitis is a clinically important entity as it may be associated with catastrophic complications including cavernous sinus thrombosis (CST), cerebral abscess or infarction, meningitis, base of skull osteomyelitis and cranial nerve palsies. We report a case of occult sphenoid sinusitis presenting as Streptococcus intermedius bacteraemia, bilateral jugular vein and CST, cranial nerve palsy and base of skull osteomyelitis.