[Intrathyroidal thymic tissue, a rare cause of thyroid nodules in children]. / Timo intratiroideo, una causa infrecuente de nódulo tiroideo en niños.

Thyroid nodules (TN) are uncommon in children. Despite TN have a higher risk of malignancy in children than in adults, in most cases, this is a rare finding and benign most of the time. The presence of intrathyroid thymic tissue may mimic the existence of a pathological node. The case of an 11-year-old female patient with a thyroid nodule incidentally detected during cervical ultrasonography and corresponding to intrathyroidal thymic tissue is presented. The goal of this research is to further study this condition to avoid unnecessary invasive diagnostic procedures.