[Electron microscopic observation on benign tumors of the facial nerve].

Two cases of benign tumors of the facial nerve were examined. One was neurilemmoma and the other neurofibroma. The histopathological diagnoses of the tumors are difficult to make with light microscope. However, electron microscopy may be helpful. Under transmission electron microscope, the difference of two kinds of tumors is obvious. The main pathological features had been discussed.