Es una ubicación anormal ya sea de toda o de parte de la glándula tiroides por debajo del esternón (sternum ). La tiroides normalmente está localizada en la parte frontal del cuello.
Shimul A. Shah, MD, Assistant Professor of Surgery, University of Massachusetts Medical School, Worcester, MA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.