Primary central nervous system lymphoma - a rare form of non-Hodgkin's lymphoma that affects the brain, eyes, spinal cord or other areas of the nervous system. This condition is often difficult to diagnose due to its non-specific symptoms such as headache, confusion, weakness, and seizures. Some synonyms for primary central nervous system lymphoma include - primary CNS lymphoma, cerebral lymphoma, brain lymphoma, neurolymphoma, and lymphoma of the central nervous system. The treatment for this condition usually includes a combination of chemotherapy, radiation therapy, and stem cell transplantation. Early detection and prompt treatment can improve the outcome of this condition.