[Granular cell tumor (Abrikossoff's tumor). A review and our experience].

The low incidence of these tumors compelled the AA., after diagnosis of one of laryngeal sitting, to a review of the theme and its literature as well, particularly under the viewpoint of its histogenesis, which has been debatable up to lately. The report is complemented with the study of immunohistochemical tests for NHK, S-100 and specific neural enolase of the specimen.