Diffuse large B-cell lymphoma of the cauda equina.

Primary central nervous system (CNS) lymphoma is a rare form of non-Hodgkin's lymphoma. The clinical presentation is variable, depending on its localisation within the nervous system. Only 1% of primary CNS lymphoma emerges in the spinal cord, and the prevalence of primary lymphoma of the cauda equina is unknown, but probably even rarer.

Lithium lacks effect on survival in amyotrophic lateral sclerosis: a phase IIb randomised sequential trial.

Objectives: To determine the safety and efficacy of lithium for the treatment of amyotrophic lateral sclerosis (ALS) in a randomised, placebo controlled, double blind, sequential trial.

Methods: Between November 2008 and June 2011, 133 patients were randomised to receive lithium carbonate (target blood level 0.4-0.