Pigmented villonodular synovitis. A literature review and unusual case report

The literature contains various nomenclature and classifications regarding the pigmented villonodular pathology that have proven to be quite confusing. This article clarifies this and emphasizes the fact that there is a spectrum of inflammatory pathologies that may affect synovial tissue. The primary focus of this article is pigmented villonodular Synovitis (PVNS) which refers to joint pathology.