plunging goiter
Pronunciation: PLUN-jing GOY-ter
Thyroid enlargement that extends into the thoracic inlet or mediastinum below the level of the thoracic outlet.
Full Definition
A plunging goiter, also known as substernal or retrosternal goiter, is an enlarged thyroid gland that extends below the thoracic inlet into the superior mediastinum. Typically defined as thyroid tissue extending below the level of the manubrium or thoracic outlet, this condition may cause compressive symptoms including dysphagia, dyspnea, and superior vena cava syndrome. Surgical management often requires a cervical approach, though some cases may necessitate sternotomy or thoracotomy for complete removal.
Usage
Usage note: Preferred over 'diving goiter'. Use 'substernal' or 'retrosternal' as more precise anatomical terms.
In Context
- "CT imaging revealed a large plunging goiter extending into the anterior mediastinum." — radiology report
- "The patient's plunging goiter caused significant tracheal compression and dyspnea." — consultation note