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Drainage post-thyroglossal duct remnant surgery: possible source and analysis
Saraiza Abu Bakar1, Efrain A Martinez-Alvernia, Leila A Mankarious
1Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA.
Summary
Tongue base salivary tissue is 3.3 mm from the hyoid. MUC5AC protein identifies thyroglossal duct remnants, while MUC7 identifies salivary tissue after Sistrunk surgery.
Area of Science:
- Anatomy
- Histology
- Biochemistry
Background:
- Thyroglossal duct (TGD) remnants can be challenging to distinguish from salivary tissue post-Sistrunk surgery.
- Understanding the anatomical relationship between tongue base salivary tissue and the hyoid bone is crucial for surgical assessment.
Purpose of the Study:
- To determine the average distance between tongue base salivary tissue and the hyoid bone in adults.
- To identify distinct protein markers in TGD remnants versus normal salivary tissue to differentiate their origin after surgery.
Main Methods:
- Histological measurement of the distance between salivary tissue and the hyoid in adult cadavers.
- Immunohistochemistry (IHC) analysis of pediatric post-Sistrunk surgery specimens for amylase, MUC5AC, and MUC7 expression.
Main Results:
- The average distance between tongue base salivary tissue and the hyoid was 3.3 mm in adults.
- MUC5AC (tracheobronchial mucin) was present in all TGD remnants, while MUC7 (salivary mucin) was found in adjacent salivary tissues.
- Amylase was detected in both TGD remnants and salivary tissues, thus not differentiating the two.
Conclusions:
- Tongue base salivary tissue is anatomically located approximately 3.3 mm from the hyoid bone.
- MUC5AC is a specific marker for TGD remnants, and MUC7 is specific for salivary tissue, aiding in post-Sistrunk surgery specimen analysis.
- Amylase is not a reliable marker for distinguishing between TGD remnants and salivary tissue.
