The Sonography and Physical Findings on Shoulder after Selective Neck Dissection in Patients with Head and Neck Cancer: A Pilot Study
Table 3
Comparison of sonographic findings between surgical and nonsurgical side.
Surgical side (n=20)
Nonsurgical side (n=14)
P
Muscle thickness, cm (median (IQR))
Trapezius
0.72(0.60-1.03)
1.18(1.08-1.31)
0.001
Deltoid
1.82(1.62-2.04)
1.8(1.54-2.09)
0.986
ARFI with SWV, m/s (median (IQR))
Trapezius
3.05(2.35-3.30)
3.2(3.10-3.45)
0.033
Deltoid
2.63(2.41-2.93)
2.73(2.63-3.06)
0.090
Abnormal findings od sonography, (n, %)
Biceps (tenosynovitis, tendinosis, tear)
8(40.0%)
2(14.3%)
0.107
Subscapularis(tendinosis, tear)
16(80.0%)
10(71.4%)
0.428
Supraspinatus(tendinosis, tear)
20(100.0%)
10(71.4%)
0.022
Infraspinatus(tendinosis, tear)
1(5.0%)
1(7.1%)
0.661
Teres Minor(tendinosis, tear)
1(5.0%)
0(0)
0.588
Subdeltoid Bursa(effusion, bursitis)
11(55.0%)
2(14.3%)
0.018
Frequency distribution table was used to calculate the total number of each diagnosis. Fisher exact test was used for the between-group comparison of each sonographic finding. Mann-Whitney U test was used for between-group comparison of muscle thickness of trapezius and deltoid muscle belly. p<0.05. ARFI= acoustic radiation force impulse; SWV= shear wave velocity.
