1. Middle mediastinal parathyroid: diagnosis and surgical approach
Robin P Boushey, MD, Thomas R.J Todd, MD 
The Annals of Thoracic Surgery 
Volume 71, Issue 2, Pages (February 2001)
DOI: /S (00)

2. Fig 1
Artist’s rendition of the surgical approach illustrating complete exposure of the subcarinal space and right pulmonary artery after lateral retraction of the superior vena cava and aortic arch. In both patients a parathyroid gland was identified just above the right pulmonary artery lying on the anterior aspect of the proximal left main stem bronchus.
The Annals of Thoracic Surgery  , DOI: ( /S (00) )

3. Fig 2
Intraoperative photograph demonstrating the surgical exposure obtained at the time of tracheal resection. A similar exposure was used to resect ectopic parathyroid tissue after identification of important landmark structures including the following: A = right pulmonary artery; B = trachea; C = left main bronchus; D = superior vena cava.
The Annals of Thoracic Surgery  , DOI: ( /S (00) )