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Medicina (Buenos Aires)

versión impresa ISSN 0025-7680versión On-line ISSN 1669-9106

Resumen

JERKOVICH, Fernando et al. Thyroglossal duct remnants detected by ultrasonography after total thyroidectomy for thyroid carcinoma. Medicina (B. Aires) [online]. 2020, vol.80, n.5, pp.447-452. ISSN 0025-7680.

There are numerous reports of incidental findings of thyroglossal duct remnants (TGDR) after total thyroidectomy, but its implication on the outcome of patients with differentiated thyroid cancer (DTC) is unknown. The aim of this study was to determine the frequency of TGDR detected by ultrasonography after total thyroidectomy in patients with DTC and to evaluate the impact of this finding on the response to treatment. A total of 377 records of patients with DTC who received total thyroidectomy between January 1994 and January 2017 were reviewed. Patients with less than one year of follow-up after surgery were excluded. TGDR was diagnosed in 16 out of 377 (4.2%). Fifteen had a low risk of recurrence DTC and 13 of them were treated with radioactive iodine. All low risk patients had an excellent response to treatment. Only one with an intermediate risk of recurrence DTC had an initial structural incomplete response which changed to an indeterminate response after a modified central lymph node dissection. The median time of TGDR diagnosis after thyroidectomy was 5 years (1-16). Two patients underwent TGDR surgery due to the presence of a rapidly growing neck mass, 2.4 and 4 cm in size, detected 9 and 16 years after thyroidectomy, respectively. The prevalence of this condition seems to be rare. However, the appearance of a cystic mass during the follow-up of a patient with DTC cancer could be confused with metastatic disease. The diagnosis of TGDR seems not to have an impact on the response to treatment.

Palabras clave : Thyroglossal duct remnants; Thyroglossal duct cysts; Total thyroidectomy; Differentiated thyroid cancer; Risk of recurrence.

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