Predictive value of thyroid tissue density in determining the patients on whom sternotomy should be performed

Retrosternal goiter incidence rates range between 0.2% and 45% of all goiters, and sternotomy is performed in some of patients. There is no consensus for selecting the patients on whom sternotomy should be performed. We aimed to determine the most important factor for predicting requirement of sternotomy.

This prospective study included 260 patients with retrosternal goiter. The clinical symptoms, history of previous thyroidectomy, presence of tracheal deviation, tracheal compression, site of mediastinal extension, thyroid tissue density, findings of intubation, type of surgical approach, histologic findings of thyroid, weight of thyroid, and postoperative complications were evaluated.

Thyroid tissue density, posterior location, and subcarinal extension were found to be independent factors for predicting requirement of sternotomy. The risk for sternotomy increased 47-fold for patients with harder thyroid tissue density (OR: 47.3; 95% CI: 5.8-385.70), 20-fold for patients with subcarinal extension (OR: 20.5; 95% CI: 2.5-168), and 10-fold for patients with posterior location (OR: 10.5; 95% CI:1.8-60).

Thyroid tissue density was defined the strongest predictive factor for requirement of sternotomy. Preoperatively obtained information thyroid tissue density can be useful for surgical strategy.