Neurofibroma and schwannoma of the oral cavity. A clinical and ultrastructural study.

The clinical parameters of fifty-five cases accessioned as neurofibroma and schwannoma of the oral cavity were reviewed. An electron microscope study was performed on several cases. The component cells of neurofibroma were spindle shaped, with bundles of collagen fibrils between cells. Junctional complexes were observed between adjacent cells. Component cells of the schwannoma showed numerous convoluted cytoplasmic processes. Reduplication of basal lamina was frequently observed and formed the material in the hyalinized area of Verocay bodies.