Melanotic Schwannoma: Two Cases of Rare Lesions

[摘要] Melanotic schwannomas (MS) arise from sympathetic nervous system commonly from the spinal or autonomic nerves near the midline [1]. Hundreds of cases of MS have been reported in the English medical literature. However, intracranial MS and intramedullary MS were rare, with respectively 20 and 10 cases being reported to date [2, 3]. We report two cases of MS occurring in the uncommon locations. Both the uncommon locations and the melanotic component of the reported lesions make them difficult to distinguish from malignant melanomas or meningeal melanocytomas.