RT Journal Article SR Electronic T1 A medical soft tissue mass of the knee. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 200 OP 200 VO 30 IS 1 A1 De Stefano, Renato A1 Selvi, Enrico A1 Cosentino, Roberto A1 Manganelli, Stefania A1 Frati, Elena A1 Marcolongo, Roberto YR 2003 UL http://www.jrheum.org/content/30/1/200.abstract AB