Background: Although thyroidectomy is one of the most common surgical procedures performed worldwide, some permanent complications, despite the considerably reducing incidence, may affect dramatically the patients quality of life. The purpose of this study is to evaluate whether factors identified preoperatively and expressed in a score could be predictors of major surgical difficulty during total thyroidectomy and influence the incidence of complications. Methods: A total of 164 patients who underwent total thyroidectomy were examined. For each patient we calculated a preoperative score, including seven parameters, which we evaluated to be predictors of difficulty in thyroid surgery, that is, sex, body mass index (BMI), neck length, neck extension, thyroid gland volume, thyroiditis, and increased parenchymal vascularization. The overall score was also compared with peri-and post-operative factors describing objectively the difficulty in thyroid surgery. These factors are the duration of the operation, the length of hospitalization, the incidence of complications such as hemorrhage, hypoparathyroidism, and recurrent laryngeal nerve injuries. Results: There was no statistically significant association between our score and either the percentage of postoperative complications or the length of hospitalization. The operative time was the only variable remarkably associated with the score value (p < 0.00001). Comparing the duration of the operation with each of the preoperative predictive factors, we found that none of the factors reached the value of statistical significance, but a close association could be noted with the thyroid volume and the BMI. Conclusions: In our study, predictors of difficulty in thyroidectomy did not affect morbidity rates, as suggested by previous studies, but only operative times, which were significantly increased in patients with higher score. Although our results have limited statistical significance, they allow us to confirm the fundamental role of a systematic use of optical magnification and microsurgical technique in thyroidectomy. Further studies, with a larger cohort of patients, are needed to validate our results and to formulate a universally accepted predictive score of difficulty in thyroidectomy preoperatively.
We present the case of a 61-year-old male patient with chronic obstructive pulmonary disease and a large cervicomediastinal multinodular hyperfunctioning goiter that made thyroidectomy a daunting task, especially considering the risk of intraoperative bleeding. The preoperative computed tomographic (CT) scan showed the right thyroid lobe very deeply rooted in the mediastinum, below the horizontal plane passing through the aortic arch. The thyroid mass imprinted the arterious and venous innominate trunks. To avoid a median sternotomy and remove the enlarged thyroid through a cervical approach alone, we decided to reduce the goiter in volume preoperatively by embolizing the thyroid arteries. We embolized the superior and inferior left, and the inferior right thyroid arteries. We spared the superior right thyroid artery because its blood supply contributed little to thyroid perfusion. After embolization, the patient was treated with antithyroid agents and corticosteroid drug therapy. At the same time, severe leukocytosis developed, thyroid hormone values increased, and a CT scan obtained 7 days after embolization showed the thyroid unchanged in volume. We therefore discharged the patient and were waiting for his laboratory blood chemical findings to return to normal. Thirty days later the patient was readmitted to hospital, and a new CT scan showed that the thyroid mass had diminished to half its initial volume. We could therefore perform a total thyroidectomy through a cervical approach alone. The only problem arose in dissecting tight right inferior laryngeal nerve adhesions to the thyroid capsule, probably sequelae of postembolization thyroiditis. Even though preoperative thyroid-artery embolization cannot be considered a routine technique in cervicomediastinal goiter surgery, in a rare patient who presents with a voluminous goiter such as the one we describe here, it is a useful procedure.
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