Intradural extramedullary cavernous hemangioma involving S2 nerve root: A case report and review of the literature

Intradural extramedullary cavernous hemangioma involving the nerve fiber is a rare clinical entity. Here, we report an extremely rare case of cavernous hemangioma that presented as an intradural extramedullary tumor involving the left S2 nerve fiber. A 28-year-old female presented with intractable left leg pain. Her lumbar magnetic resonance image showed an intradural and extramedullary neoplastic lesion at left S1-2 level. Because her symptoms had deteriorated, surgical treatment was performed. The neoplasm was involving the left S2 nerve fiber mimicking a schwannoma. The neoplasm was completely resected, and diagnosis of cavernous hemangioma was confirmed by the histopathological findings. The patient's symptoms improved after surgery, and there is no recurrence at the 1-year follow-up. To the best of our knowledge, this is the most caudal level of intradural extramedullary cavernous hemangioma involving the nerve fiber in the literatures. Complete resection was performed, and clinical outcome was favorable.