title: Malignant melanoma in the maxillary sinus--a case successfully treated with radiotherapy.
abstract: In this paper, we present a case where radiotherapy was very effective against malignant melanoma. We performed a total maxillectomy as the primary treatment, but the tumor recurred rapidly in the operated wound. Then, the patient was treated with 50 Gy in twenty-five treatments. After that, the tumor disappeared remarkably. On the other hand, this malignant melanoma was of the amelanotic type. We carried out a Fontana's stain and electronic microscopy to provide the criteria for the diagnosis of malignant melanoma. The pathological character of this malignant melanoma was investigated.
mesh_terms: D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D003131:Combined Modality Therapy; D003452:Cryosurgery; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D008444:Maxillary Sinus Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D008545:Melanoma / Q000532:radiotherapy* / Q000601:surgery; D009364:Neoplasm Recurrence, Local / Q000532:radiotherapy; D010255:Paranasal Sinus Neoplasms / Q000532:radiotherapy*; D012086:Reoperation