Delay Posttraumatic Paradoxical Cerebrospinal Fluid Leak with Recurrent Meningitis

Area of Science:

• Neurosurgery
• Neurology
• Otolaryngology

Background:

• Cerebrospinal fluid (CSF) rhinorrhea is a known complication of head trauma and basilar skull fractures.
• Typically, CSF leaks occur within 48 hours to 3 months post-injury.
• Delayed leaks beyond 3 months are uncommon.

Observation:

• CSF typically exits via dural tears associated with anterior skull base fractures.
• A rare presentation involves CSF leakage through the eustachian tube from middle cranial fossa fractures.
• The case involves a 52-year-old woman with delayed, paradoxical CSF rhinorrhea and recurrent meningitis.

Findings:

• This case presents a rare delayed, paradoxical CSF rhinorrhea.
• The patient experienced recurrent meningitis secondary to the CSF leak.
• The anatomical pathway of the leak, through the eustachian tube, is exceptionally unusual.

Implications:

• Highlights the importance of considering rare causes of delayed CSF rhinorrhea.
• Underscores the potential for recurrent meningitis in cases of undiagnosed CSF leaks.
• Suggests the need for thorough investigation of unusual anatomical pathways in post-traumatic CSF leaks.