Table 3.

US abnormalities in the 72 PsA patients included in the study.

Patients with at least one joint with effusion, no (%)	42 (58.3 %)
Joint with synovial effusion, mean (SD) and median (range)	1.32 + 1.63	2.26 + 1.54*	1.0 (0–6)	2.0 (1–6)*
Patients with at least one joint with synovial hypertrophy, no (%)	30 (41.7 %)
Joint with synovial hypertrophy, mean (SD) and median (range)	0.71 + 1.0	1.70 + 0.87*	0 (0–4)	2 (1–4)*
Patients with at least one joint with positive PD signal, no (%)	14 (19.4 %)
Joint with PD positive signal, mean (SD) and median (range)	0.44 + 1.19	2.29 + 1.82*	0 (0–8)	2 (1–8)*
Patients with at least one tendon sheath distension, no (%)	14 (19.4 %)
Tendon with sheath distension, mean (SD) and median (range)	0.76 + 1.94	3.06 + 2.88*	0 (0–10)	2 (1–10)*
Patients with at least one tendon with PD signal, no (%)	5 (6.9 %)
Tendon with PD signal, mean (SD) and median (range)	0.19 + 0.81	3.40 + 3.43*	0 (0–5)	2 (1–5)*
Patients with at least one enthesis with chronic lesions, no (%)	67 (93. 1%)
Enthesis with chronic lesions, mean (SD) and median (range)	4.87 + 2.73	5.24 + 2.46*	5.0 (0–11)	5.0 (1–11)*
Patients with at least one enthesis with acute lesions, no (%)	30 (41.7 %)
Enthesis with acute lesions, mean (SD) and median (range)	0.86 + 1.17	1.68 + 0.89*	0 (0–4)	2 (1–4)*
Patients with at least one enthesis with hypoechogenicity, no (%)	11 (15.3 %)
Entheseal hypoechogenicity, mean (SD) and median (range)	0.15 + 0.36	1.91 + 0.83*	0 (0–1)	2 (1–3)*
Patients with at least one enthesis with PD signal, no (%)	17 (23.6 %)
Entheseal PD, mean (SD) and median (range)	0.63 + 1.35	2.0 + 0.94*	0 (0–5)	2 (1–5)*
Patients with at least one bursa enlargement, no (%)	19 (26 %)
Bursa enlargement, mean (SD) and median (range)	0.45 + 0.87	1.68 + 0.89*	0 (0–4)	(0–4)*
Total PD lesions, mean (SD) and median (range)	1.48 + 1.94	2.71 + 1.89*	1 (0–11)	3 (0–11)*
Patients with at least one PD lesion, no (%)	39 (54.2 %)

^*Mean and median values of the patients who had US lesions.