Parathyroid Glands

  • There are typically four parathyroid glands:
    • Supernumerary glands:
      • Have been found in up to 13% of people on autopsy
  • They are typically light brown in appearance:
    • Measure 6 mm x 4 mm x 2 mm in size:
      • Each weighs 50 mg
  • The superior parathyroid glands:
    • Are dorsal and lateral to the RLN
  • The inferior parathyroid glands:
    • Are ventral and medial to the RLN
  • Parathyroid glands:
    • Primarily derive their blood supply:
      1. From the inferior thyroid artery
    • Branches of the superior thyroid artery:
      • Can provide up to 20% of the blood supply:
        • Of the superior glands
    • Branches from the thyroidea ima, in addition to vessels to the trachea, esophagus, larynx, and mediastinum:
      • May also be found

#Arrangoiz #ParathyroidSurgeon #ParathyroidExpert #CancerSurgeon #Hyperparathyroidism #MSMC #MountSinaiMedicalCenter #Teacher #HeadandNeckSurgeon #Mexico #Miami

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