Abstract: |
Lymphomatous meningitis (LM) is a common problem in neuro-oncology, occurring in approximately 5% of all patients with systemic lymphoma. Notwithstanding frequent focal signs and symptoms in LM, LM is a disease affecting the entire neuraxis and therefore staging and treatment need to encompass all cerebrospinal fluid (CSF) compartments. CNS staging of LM includes contrast enhanced cranial computerized tomography (CE-CT) or magnetic resonance imaging (MR-Gd), contrast enhanced spine magnetic resonance imaging (MR-S) or computerized tomographic myelography (CT-M) and radionuclide CSF flow study. Treatment of LM includes involved-field radiotherapy of bulky or symptomatic disease sites and intrathecal chemotherapy (intra-CSF) drug therapy. The inclusion of concomitant systemic therapy (high dose methotrexate or cytarabine) may benefit patients with LM and may obviate the need for intra-CSF chemotherapy. At present, intra-CSF drug therapy is confined to three chemotherapy agents (i.e. methotrexate, cytarabine and thiotepa) administered by a variety of schedules either by intralumbar or intraventricular drug delivery. Although treatment of LM is palliative, with an expected median patient survival of 6-10 months, it often affords stabilization and protection from further neurologic deterioration. |