Abstract
Embryological descent, remnants and implications for thyroid surgery
Highlights
Thyrothymic remnants /rests While some standard text books of Anatomy and Embryology mention tract remnants and the pyramidal lobe, very little emphasis is given to the tubercle of Zuckerkandl and the thyrothymic remnants /rests
The pyramidal lobe is a narrow lobe of the thyroid gland that arises from the upper border of the isthmus and extends upward, sometimes as far as the hyoid bone; it marks the point of continuity with the thyroglossal duct
The tubercle of Zuckerkandl (TZ) is an embryological remnant of thyroid gland which first described by Austrian anatomist Emil Zuckerkandl in 1902 as the “processus posterior glandulae thyroideae”, is as a distinguishable thickening or nodule at posterolateral aspect of the gland
Summary
With the emergence of the era of total thyroidectomy and more reoperative thyroid surgery being undertaken by endocrine surgeons the significance of the tubercle has been emphasized in the last two decades. Embryological Descent, Remnants and Implications for Thyroid Surgery There are some remnants of this embryological process which have critical significance in thyroidectomy.
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