-
Figure 1 A and B: Nomenclature system for parathyroid location.
-
A type A gland is a “normal” superior gland in proximity to the posterior surface of the thyroid parenchyma:
-
It may be compressed within the capsule of the thyroid.
-
-
A type B gland is a superior parathyroid gland that has fallen posteriorly into the tracheoesophageal groove:
-
There is minimal or no contact between the gland and the posterior surface of the thyroid tissue.
-
-
A type C gland is a superior gland that has fallen posteriorly into the tracheoesophageal groove and lies at the level of or below the inferior pole of the thyroid.
-
The type D gland lies in the mid region of the posterior surface of the thyroid parenchyma, near the junction of the RLN and the inferior thyroid artery:
-
The type D gland may be either a superior or inferior gland, depending on its exact relationship to the nerve, which generally cannot be determined on imaging.
-
-
The type E gland is an inferior gland in close proximity to the inferior pole of the thyroid parenchyma anterior to the trachea.
-
The type F gland is an inferior gland that has descended into the thyrothymic ligament or superior thymus:
-
It may appear to be “ectopic” or within the mediastinum.
-
-
A type G gland is a rare intrathyroidal parathyroid gland.
-
-
Reference:
-
Rodgers SE, Hunter GJ, Hamberg LM, et al. Improved preoperative planning for directed parathyroidectomy with 4-dimensional computed tomography. Surgery 2006;140(6):932–940.)
-
Rodrigo Arrangoiz MS, MD, FACS cirujano de tumores de cabeza y cuello / cirugia endocrina miembro de Sociedad Quirúrgica S.C. experto en el manejo delhiperparatiroidismo primario.
Entrenamiento:
-
Cirugia general y gastrointestinal: