Late meningitis and a nonabsorbable stent in recurrent Rathke's cleft cyst: illustrative case.

Background: The management of recurrent Rathke's cleft cysts (RCCs) remains challenging. The off-label application of steroid-eluting bioabsorbable or nonabsorbable intracystic stents has been recently described. Early outcomes and complications of this treatment have been described as well, but long-term data are lacking.

Observations: A 31-year-old woman who had undergone 3 prior transsphenoidal surgeries for recurrent RCC at other institutions was admitted for methicillin-susceptible Staphylococcus aureus meningitis. Five years earlier, a nonabsorbable stent had been placed in the cyst using a microsurgical transsphenoidal approach. RCC recurrence had been radiologically evident after 2 years but was clinically asymptomatic. Acute cerebrospinal fluid leakage and other causes of meningitis were ruled out; the stent was occluded. After antibiotic therapy and resolution of the meningitis, the patient underwent endoscopic removal of the catheter, excision of the cyst, and reconstruction with a nasoseptal flap. At the 18-month follow-up, she remained neurologically intact, under replacement therapy, and with no signs of recurrence.

Lessons: The authors report the first case of late meningitis due to a nonabsorbable stent positioned for the treatment of a recurrent RCC. Currently, data on the long-term outcomes, failure rates, and complications of stents for RCC are limited. https://thejns.org/doi/10.3171/CASE2477.