Fig. 2From: RETRACTED ARTICLE: Does serum B lymphocyte chemoattractant protein13 (CXCL13) level correlate with parameters of disease activity and severity in rheumatoid arthritis? Clinical and musculoskeletal ultrasonographic assessmenta–c Dorsal longitudinal MSUS dorsal scan of radiocarpal joint in two different RA patients. a Gray-scale dorsal longitudinal musculoskeletal ultrasonographic scan of a 2nd metacarpophalangeal joint (m: metacarpal bone, p: proximal phalanx) shows synovial hypertrophy (black arrow) grade 2 and an erosion (e) in RA patient with increased serum CXCL13 level of 120 pg/ml. b Grey-scale dorsal longitudinal midline musculoskeletal ultrasonographic scan of the wrist joint (radiocarpal and midcarpal joints) of the same patient shows an erosion (arrow) in the lunate bone (r: radius bone, L:lunate bone, C: capitate bone). c Dorsal PDUS longitudinal midline musculoskeletal ultrasonographic scan of a wrist joint (radiocarpal and midcarpal joints) (r: radius bone, L: lunate bone, C: capitate bone) shows severe synovitis marked by synovial hypertrophy grade 3 and power doppler activity grade 3 in RA patient with increased serum CXCL13 level of 803 pg/ml. CXCL13: serum B lymphocyte chemoattractant protein13. PDUS power doppler ultrasoundBack to article page