 
         
         Abstract
         
         The authors report a pathologically confirmed case of primary malignant melanoma located
            in the intradural lumbosacral area, which is extremely rare due to its atypical location
            and manifestation. However rare, primary malignant melanoma could present as an intradural
            tumor and cause neurological deficit.
         
         keywords
intramedullary tumor - melanoma - retroperitoneum