We present a case of a 37-year-old woman with cystic swelling at the left lobe of the thyroid gland otherwise unrelated to the thyroid gland. Endocrinologist recommended tumour excision with left-sided hemithyroidectomy.
Paresis of the left vocal cord was diagnosed preoperatively. A connection between para-glandular swelling and the left recurrent nerve was confirmed during surgery.
Due to the large volume, the lesion was removed after having been debulked by puncture. In the postoperative period, the left vocal cord paresis persisted.
A cystic schwannoma was verified histologically.