Olfactory neuroblastoma is an uncommon tumor arising in the nasal cavity. Since the first description by Berger in 1924, about 200 cases of such tumors have been reported in foreign literature. In Japan 31 cases have been reported in the literature and in proceedings of various meetings. The authors report two cases of olfactory neuroblastoma.
Case I. is a 67-year-old male, who complained of unilateral nasal obstruction and epistaxis. X-ray studies revealed an intracranial extension. Case 2 is a 69-year-old female who developed visual disturbance and complained of headaches. She was found to have an intracraniatl mass by computed tomography. Both patients died in spite of extensive therapy and the autopsy results are reported.
