Postthyroidectomy voice and swallowing symptoms (PVSS) may occur even in absence of laryngeal nerve injuries, which remains poorly understood.

The objective of this review was to investigate the occurrence of PVSS and the potential etiological role of laryngopharyngeal reflux (LPR).

Three investigators search PubMed, Cochrane Library, and Scopus databases for studies investigating the relationship between reflux and PVSS.

The authors adhered to PRISMA statements and the following outcomes were investigated: age, gender, thyroid features, reflux diagnosis, association outcomes, and treatment outcomes.

Based on the study findings and bias analysis, authors proposed recommendations for future studies.