[Clinical analysis of 134 cases of central nervous system leukemia].

134 cases of central nervous system leukemia (CNSL) were reported. The clinical manifestations and the relationship of its occurrence with the duration of the disease and the effectiveness of prophylaxis were discussed. It was found that most cases of CNSL occurred 3 months after the diagnosis of leukemia. It was quite different from the reports in literature that most CNSL usually occurred after complete remission, with CSF routine examination the into cranial pressure, the protein content, the white cell count and the smear for leukemic cells were of significant diagnostic help. Among these, the founding of leukemic cells in the fresh specimen by using natural precipitation method is the most reliable diagnostic criterion of CNSL.