Postoperative cerebrospinal fluid leak after septoplasty: A potential complication of occult anterior skull base encephalocele.

Postoperative cerebrospinal fluid (CSF) rhinorrhea after septoplasty is a known entity resulting from errors in surgical technique and improper handling of the perpendicular plate of the ethmoid bone. When these occur, urgent management is necessary to prevent deleterious sequelae such as meningitis, intracranial abscess, and pneumocephalus. Encephaloceles are rare occurrences characterized by herniation of intracranial contents through a skull base defect that can predispose patients to CSF rhinorrhea. In this report, we present a case of CSF rhinorrhea occurring 2 weeks after septoplasty likely from manipulation of an occult anterior skull base encephalocele. To our knowledge, no previous similar case has been reported in the literature. Otolaryngologists should be aware of the possibility of occult encephaloceles while performing septoplasties because minimal manipulation of these entities may potentially result in postoperative CSF leakage.