[Age, duration of disease and survival period of patients with involvement of the nervous system by malignant lymphomas. A statistical comparison of mycosis fungoides with lymphogranulomatosis (author's transl)].

A statistical comparison dealing with age, duration of disease and survival period of patients with involvement of the nervous system by malignant lymphomas revealed the following data: 1. With mycosis fungoides, involvement of the nervous system occurs later in life than with lymphogranulomatosis; this difference is statistically highly significant (P less than 0.001). 2. There is no statistical difference (P greater than 0.05) in the duration of either type of malignant lymphoma before the nervous system becomes involved. 3. It is of high statistical significance (P less than 0.001) that, once the nervous system has become involved, the survival period is lower with mycosis fungoides than with lymphogranulomatosis. It can be expected that involvement of the nervous system by mycosis fungoides leads with 79% probability (confidential limits 99% = 47.29--96.22%) to death within 6 months.