Fibrous Histiocytomas of the Nose and Paranasal Sinuses

Abstract
Two cases of typical fibrous histiocytoma and one case of histiocytic neoplasm resembling the xanthogranuloma of the retroperitoneum occurred. Because of the limited experience with neoplasms of this type and the lack of prognostic histological features, the biological behavior of this class of neoplasm must await additional reports.