title: [The ultrastructure of a neurinoma derived from the facial nerve (author's transl)].
abstract: A rare case of a neurinoma of the left facial nerve was investigated on the electron microscopic level. The tumor developed in a 27 years old man and induced a facial paresis by nerve compression. Ultrastructurally the tumour cells were characterized by markedly notched nuclei and a well developed organized cytoplasm with multiple organelles (lysosomes, Golgi's complex, mitochondria, rough endoplasmic reticulum). Fibroblasts were frequently observed in the interstice. So-called "long spacing collagen" was not detected in the interstice. The arrangement of the tumour cells represents the Antoni A type.
mesh_terms: D000328:Adult; D003390:Cranial Nerve Neoplasms / Q000648:ultrastructure*; D005154:Facial Nerve / Q000648:ultrastructure*; D006801:Humans; D008297:Male; D009442:Neurilemmoma / Q000648:ultrastructure*
vernacular_title: Zur Ultrastruktur des Neurinoms des Nervus facialis.