neu·ro·fi·bro·ma 
(nr′ō-fī-brōmə, nyr′-)
(nr′ō-fī-brōmə, nyr′-)n. pl. neu·ro·fi·bro·mas or neu·ro·fi·bro·ma·ta (-mə-tə)
A benign tumor of the peripheral nerve sheath, usually nonencapsulated and composed of a mixture of cell types including Schwann cells and fibroblasts.