1990 Volume 1990 Issue Supplement37 Pages 327-339
Two cases of malignant oncocytoma are reported. The first case was a 58-year-old male with tumor of right parotid gland. The second case was a 37-year-old male with tumor of right maxillary sinus origin. In spite of treatments both patients died with metastatic lesions. These cases were diagnosed by histochemical examination and electron microscopy.