Choroid plexitis is a general term referring to an inflammatory process affecting the choroid plexus; it is usually due an infectious process. It is rarely seen as an isolated process and is commonly found in association with encephalitis, meningitis, or ventriculitis 1. The choroid plexus can also be a place of noninfectious inflammatory disorders, such as sarcoidosis, xanthogranulomas, and rheumatoid nodules 2.
The choroid plexus lies at the interface between the cerebrospinal fluid and the systemic circulation, its capillaries have a fenestrated epithelium that serves as a way through which infectious organisms may gain access to the CNS 1,2.
CT and MRI
Lateral ventricle choroid plexus asymmetry or bilateral symmetric enlargement of the choroid plexus should alert one to possible choroid plexitis 1.
- 1. MBA DMYMD, Zimmerman RD, Grossman RI. Neuroradiology. Mosby. (2010) ISBN:0323045219. Read it at Google Books - Find it at Amazon
- 2. Kovoor JM, Mahadevan A, Narayan JP et-al. Cryptococcal choroid plexitis as a mass lesion: MR imaging and histopathologic correlation. AJNR Am J Neuroradiol. 2002;23 (2): 273-6. AJNR Am J Neuroradiol (full text) - Pubmed citation