Related Experiment Video
Updated: Jun 8, 2026

Substernal Thyroid Biopsy Using Endobronchial Ultrasound-guided Transbronchial Needle Aspiration
Published on: November 10, 2014
Ectopic thyroid presenting as a submandibular mass
Joseli Assem Bersaneti1, Rafael Denadai Pigozzi Silva, Rodrigo Rizzo Nogueira Ramos
1Department of Surgery, School of Medical Sciences, Universidade de Marília (UNIMAR), Marília, São Paulo, Brazil.
Abstract:
Although extremely rare, the presence of ectopic thyroid tissue in the submandibular region should be considered in the differential diagnosis of tissue masses in the cervical region. Diagnosis is confirmed by fine-needle aspiration biopsy and exclusion of malignancy should be confirmed by histopathologic analysis of the lesion. In general, surgery is the treatment of choice. A rare case of ectopic thyroid in the right submandibular region is reported; it was diagnosed after total thyroidectomy and successfully treated through surgery.
Related Concept Videos
Hyperthyroidism I: Introduction
The Thyroid Gland
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...
Graves Disease II: Pathophysiology
Goiter
Hyperthyroidism II: Pathophysiology
Graves' Disease I: Introduction

