A Clinical Review and Results of Treatment in Non-squamous Cell Tumor of the Maxilla

Background : Most of the cancers of maxillary sinus are the squamous variety, but various histopathologic types of malignant tumor can occur in the maxillary sinus. These non squamous cell tumors have quite different patterns of clinical behavior compared with squamous variety such as invasive characters, route of metastasis, treatment modality, and so on. Objectives : The authors intend to establish the clinical characteristics and treatment modalities of non squamous cell tumors of the maxillary sinus. Material and Methods : We experienced 16 cases of non squamous cell tumors arisen from the maxillary sinus during the 10 year period from 1987 to 1996. We analyzed their clinical features, therapeutic modalities and results with review of literatures. Results : According to AJCC TNM system, 13 patients presented with 712,3 with 73 4. Two patients were treated with surgery after radiotherapy, 3 patients with surgery after chemotherapy and radiotherapy, 4 patients with chemotherapy and radiotherapy, 5 patients with chemotherapy and radiotherapy after surgery. Conclusion : In cases of adenoid cystic carcinoma, adenocarcinoma and sarcoma, we believe that the best form of therapy is wide surgical excision. If there is microscopic evidence of disease at or close to the resection margin, postoperative radiation was used to achieve better local control. In cases of undifferentiated carcinoma, preoperative chemotherapy and radiation therapy showed improved outcomes.ope