Fig. 5. Measurement of mean PVST and DOSS before and after the surgery (n=17). (A) Mean PVST was 2.55±0.90 mm preoperatively. However, it changed to 5.02 ± 2.33 mm after 1 month and narrowed to 3.78±0.92 mm due to recurrence in some cases. These changes were all statistically significant (p<0.001, p=0.016). (B) Likewise, DOSS scores were 4.47±1.61, 6.12±1.32, and 5.82±1.34, respectively (p=0.001, p=0.096). The graphs represent means and standard errors. *Statistical significance in paired t-test. DOSS, Dysphagia Outcome and Severity Scale; PVST, prevertebral soft tissue thickness.
