“…1,[9][10][11][12][13][14][15] The median of the time period between the first appearing of symptoms and the definitive diagnosis was 7 months (interquartile range: 9, range: 2-48). The most frequent symptoms were local swelling (65.2%), 1,6,8,[10][11][12][13][14][16][17][18][19] pain (56.5%), 1,6,7,9,10,12,15,[18][19][20] mass effect (26%), 5,9,12,13,15 and stiffness (13%). 7,9 Twelve (52.2%) patients received an initial immunosuppressive therapy.…”