Issue N# 1 - 2017
PAEDIATRY
Different methods in identification of thyroglossal duct tract
Authors : Ezzat AEM, El-Begermy MM, Eid MI, Akel MM, Abbas AY. (Cairo)
Ref. : REv Laryngol Otol Rhinol. 2017;138,1:15-20.
Article published in english 
Downloadable PDF document english
Summary :
Research question: The aim of this study was to fund out the value of loupe magnification and methylene blue dye in identification of the TGD and to compare between them. Material and methods: Comparative randomized blind non control study. Twenty two patients (age< 18 years) presented with infrahyoid thyroglossal duct cyst subjected to excision of the cyst with two methods for identification of thyroglossal duct track during the operation. Methylene blue dye (group I), loupe magnification (group II). The study was conducted in academic tertiary care medical centers, between Sept 2011 and May 2015. Identification of multiple tracts, the tract relation to the hyoid, incidences complications and operative time. Results: We found that over all present of multiple tracts was 9.1% (group I) and 36.3% (group II), with no statistically significant difference between the two groups. The incidences of complications were 27.2% (group I) and 9.1% (group II), with no statistically significant difference between the two groups. However, we found that over all incidences of identification of the track and its relation to the hyoid bone was 45.5% (group I) and 90.9% (group II), with statistically significant difference between the two groups. This also was found in the overall incidences of extension level of identification above the hyoid bone and up to the tongue base was 9.1% in group I and 72.8% in group II, with statistically significant difference between the two groups. Regarding to the operative time there was a statistically significant difference (P-value= 0.0001) by comparison between the two groups in favour of the group II. Conclusions and relevance: Intraoperative identification of thyroglossal duct track is an essential step in removal of the thyroglossal duct cyst. Both loupe magnification and methylene blue dye helps in identification of the TGDC, however, the usage of surgical loupes enhances better and safe results.
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