<unk>  is a type of synovial swelling. Types include: * Pigmented<unk>  * Giant cell tumor of the tendon sheath Though they have very different names, they have the same histology, and stain positive for CD68, HAM56, and vimentin. They are sometimes discussed together.
Villonodular synovitis
Osteophyte
Milia-like calcinosis
Facet joint arthrosis
Leri pleonosteosis
Palindromic rheumatism
Condylar hyperplasia
Synovitis