This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Surgery
Most commonly used approach for retrosternal goitre:- 
Select and explain. 
A. Transthoracic second intercostal space, B. Trans-sternal through anterior mediastinum, C. Transcervical, D. Axillary approach
C: Transcervical
Answer: C: Transcervical 
Explanation: Retrosternal goitre: - >50% thyroid tissue located below neck - A.K.A i. Sub-sternal Goitre ii. Mediastinal Goitre Retrosternal Goitre Primary Mediastinal Goitre - BLOOD SUPPLY From Neck region From mediastinum region - APPROACH Transcervical Thoracic Primary Mediastinal Goitre: Diameter of Goitre > Thoracic inlet