Table 2 Classifying parathyroid adenomas nomenclature [13]
Type | Location |
|---|---|
A | Adherent to the posterior thyroid parenchyma. Lateral to the recurrent laryngeal nerve compressed within the capsule of the thyroid parenchyma. |
B | A superior gland that has fallen posteriorly into the tracheoesophageal groove and is in the same cross-sectional plane as the superior portion of the thyroid parenchyma |
C | Caudal to the thyroid parenchyma, in the tracheoesophageal groove. More inferior than a type B gland on lateral views. At the level of the inferior pole of the thyroid or inferior to the inferior pole of the thyroid (closer to the clavicle) |
D | In the midregion of the posterior surface of the thyroid parenchyma, near the junction of the recurrent laryngeal nerve and the inferior thyroid artery or middle thyroidal vein |
E | An inferior gland close to the inferior pole of the thyroid parenchyma, lying in the lateral plane with the thyroid parenchyma and anterior half of the trachea |
F | An inferior gland that has descended (fallen) into the thyrothymic ligament or superior thymus |
G | Truly intrathyroidal |