A Rare Variant of Zuckerkandl Tubercle: Thyroid Ring

Area of Science:

• Anatomical variations of the thyroid gland
• Surgical anatomy of the neck

Background:

• Zuckerkandl tubercles are normal posteromedial projections of the thyroid gland.
• These projections have significant relationships with adjacent vital neck structures.

Purpose of the Study:

• To report a rare case of a "thyroid ring".
• To describe the anatomical configuration and relations of this variation.
• To highlight the importance of recognizing such variations for surgical planning.

Main Methods:

• Case report detailing a unique anatomical finding.
• Description of the thyroid gland's ring configuration encasing the trachea and esophagus.
• Analysis of the role of elongated Zuckerkandl tubercles in forming the ring.

Main Results:

• A complete thyroid ring was identified, formed by bilateral, elongated Zuckerkandl tubercles.
• The ring structure encircled the trachea and esophagus without causing compressive symptoms.
• The tubercles passed between the esophagus and vertebral body, meeting at the esophagus's left posterolateral border.

Conclusions:

• Elongated Zuckerkandl tubercles can form a complete thyroid ring.
• This anatomical variation, though asymptomatic, is crucial for surgeons to recognize.
• Awareness of thyroid ring anatomy improves safety and precision in neck surgeries.