Parameniscal cyst

What is a parameniscal cyst, and what is its significance?

A parameniscal cyst can form around the meniscus from extrusion of synovial fluid through a meniscal tear by one-way ball-valve mechanism. A cystic structure around or extending from the meniscus is a finding that is very closely associated with a meniscal tear, and so an underlying meniscal tear should be suspected even if not clearly identified.


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