Rheumatoid nodule formation within the choroid plexus. Report of a second case.

A woman with active systemic rheumatoid disease had striking neuropsychiatric manifestations; a rheumatoid nodule within the choroid plexus was the sole neuropathological finding. Although we found only one other report of findings of this type in rheumatoid disease, we suspect that this phenomenon may not be as rare as originally believed, and that it may represent another mechanism by which behavioral changes develop in this disorder.