Significance of CT scan for the diagnosis and the therapy of carcinomas of the maxillary sinus

The CT scan was performed preoperatively on 42 out of 54 cases with malignant tumors of the nose and of paranasal sinus origin, who had received radiation therapy from January, 1978 to March, 1980. These cases consisted of 38 squamous cell carcinomas, one osteosarcoma, one M.F.H., one malignant lymphoma and one hemangiopericytoma. The CT scan was confirmed to be superior in the following points as compared with other diagnostic methods: I) the determination of the extent of tumor invasions. II) the easier and more objective determination of staging. III) the visualization of intratumor structures. IV) the detection of intra-orbital recurrence. However it was impossible to differentiate tumors from inflammatory lesions. (author)