[Primary cerebral lymphoma. Diagnostic and therapeutic values. Apropos of 4 cases].

The authors report four recent cases, of primary cerebral Lymphoma discovered since the use of the C.T. scan. Even though rare, the incidence of this tumor seems to be in slowly increase. The lesions on the C.T. scan are too variables and the surgical biopsy is necessary for the diagnosis. The primary cerebral Lymphoma should be considered more and more like the others Lymphomas. For this reason, they have started the treatment after surgical biopsy, with chemotherapy followed by radiotherapy associated with corticotherapy. The two last patients, are still alive with a follow up of 36 months for one of them. The prognosis seems to us, better as much as the diagnosis and the treatment was started early.