Tubercle Of | Zuckerkandl

A large TZ may be misdiagnosed as a suspicious nodule. Confirm continuity with the lobe. 7. Summary of Key Facts | Feature | Detail | |---------|--------| | Incidence | 55–87% (most common bilaterally) | | Embryology | Ultimobranchial body fusion | | Function | No direct function; houses C-cells | | Surgical relevance | Landmark for RLN; source of MTC | | Injury risk | Large TZ increases RLN injury risk | | Pathology | C-cell hyperplasia, MTC, rarely benign nodules | 8. Conclusion The Tubercle of Zuckerkandl is not an anatomical curiosity but a vital surgical landmark in thyroid surgery. Its consistent relationship with the recurrent laryngeal nerve makes it invaluable for nerve preservation. Additionally, its role as a reservoir of C-cells links it directly to medullary thyroid carcinoma. Every thyroid surgeon and endocrinologist should be familiar with its anatomy, variations, and clinical implications. Take-home message: Find the Tubercle of Zuckerkandl, and you will find the recurrent laryngeal nerve. Respect it, and you will preserve voice.