ArticleRadiologia brasileira
Relationship between the mean diameter of the thyroid lobes and the transverse diameter of the trachea: an ultrasound marker for goiters.
Article in Radiologia brasileira. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: To evaluate the relationship between the mean thyroid lobe diameter (MTLD) and the transverse tracheal diameter (TTD), as determined by ultrasound, in order to validate its efficacy as a quantitative marker of goiter. Materials and Methods: Thyroid ultrasound images were analyzed. Standardized measurements included the MTLD [(transverse + anteroposterior diameter) ∕ 2], TTD, and thyroid volume [transverse diameter × anteroposterior diameter × length × 0.470]. Statistical correlation and regression analyses were employed to assess the interactions among those variables and their diagnostic utility in goiter detection. Results: A total of 300 thyroid ultrasound images (200 of adults and 100 of children/adolescents) were evaluated. We identified a significant correlation between the MTLD:TTD ratio and goiter. When the MTLD exceeded the normative TTD threshold (> 1.7 cm in adults; > 2.4 cm in children/adolescents), the mean thyroid volume was consistently elevated, in the adult patients-12.5 ± 2.1 mL (normal range, 7-10 mL)-and in the pediatric patients-18.3 ± 3.6 mL (normal range, 5.0-16.1 mL)-confirming goiter ( Conclusion: The MTLD:TTD ratio is a reliable ultrasound biomarker for goiter detection, demonstrating strong diagnostic performance and volumetric correlation.
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