(A) Shoulder girdle: (a) scapulohumeral joint (synovitis), (b) periarticular area of the scapulohumeral joint (bursitis, subtendinous bursa of infraspinatus), (c) biceps brachii tendon (vaginal synovitis), and (d) sternoclavicular joint (synovitis). Perivertebral lesions: (j) intervertebral joint of the lower cervical vertebra (synovitis), (k) spinous process of the lower cervical vertebra (bursitis), (l) intervertebral joint of the lumbar vertebra (synovitis), and (m) spinous process of the lumbar vertebra (bursitis). (B) FDG-PET/CT findings of polymyalgia rheumatica. Pelvic girdle: (e) enthesis of the pectineus muscle (enthesitis), (f) the vicinity of the enthesis of the rectus femoris muscle (enthesitis, enthesis of the rectus femoris muscle; bursitis, iliopectineal bursa), (g) hip joint (synovitis), (h) lateral side of the greater trochanter (bursitis, trochanteric bursa), and (i) ischial tuberosity (enthesitis and bursitis; 1. enthesis of the biceps femoris, 2. sciatic bursa of the gluteus maximus, 3. enthesis of the semitendinosus).