✓ A rectothecal fistula secondary to anterior sacral meningocele is an extremely rare disease. To the authors' knowledge, only 2 cases have been reported in the English-language literature. It can cause symptoms by compressing adjacent structures, causing urinary difficulties and constipation. The authors report an unusual case of a patient in whom this condition was diagnosed as an incidental finding. The patient had a sacral myelomeningocele with secondary meningitis to a rectothecal fistula. The authors will briefly review the diagnosis, the various treatments, and the surgical approach to treat this infrequent entity.