[Malignant melanoma of nasal cavity: report of 24 cases].

The malignant melanoma of nasal cavity is one of the refractory diseases. The malignant degree and the recurrent rate of this disease are high. And it is very easy to make misdiagnosis. This article reviewed the clinical and pathological data of malignant melanoma of nasal cavity for 20 years from 1971 to 1991. All the patients were followed up. We found that there were altogether 24 cases of this disease which covered 0.02% of all the inpatients during that period of time. The pathological characteristics of this tumor showed that there was a typical fore-melanin body in different tumor cells. If we pay attention to the minor and grained melanin, misdiagnosis can be avoided. Surgery is the first choice for this disease. And the post-operative radiotherapy, laser therapy gives a better result.