Lee DY, Kogay D, Song S, et al. - In patients with unilateral vocal fold paralysis, researchers assessed the prognostic value of the posterior cricoarytenoid (PCA) muscle atrophy observed on neck CT. To analyze the PCA muscle atrophy and to measure the severity of the PCA muscle atrophy in semi-quantitative manner, CT images of 87 patients with unilateral vocal fold paralysis (UVFP) were evaluated. Data reported that the PCA muscle was identifiable on CT in 73 patients. The authors correctly predicted the paralysis in 69 patients using the PCA muscle atrophy as an indicator of UVFP. PCA muscle atrophy, identified on CT scan in UVFP patients, is associated with low mobility return rates in the affected vocal fold.