Abstract
The substernal goiters ( SG ) , those in which there is a thyroid extension beyond the limits of the neck to the mediastinum are usually very voluminous and represent a major portion of thyroidectomies performed at the Disciplina de Cirurgia de Cabeça e Pescoço do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo ( DCCP - HCFMUSP ).The incidence of SG is very var…