Evaluation and management of thyroid incidentalomas detected prior to the parathyroid surgery.

•639 patients underwent radiological and ultrasound investigation of the thyroid area because of parathyroid disorders.•Incidental or asymptomatic thyroid nodules were found in 179 patients (28%).•Malignant thyroid incidentalomas are to be operated simultaneously with parathyroidectomy.•Benign unilateral incidentalomas are to be operated simultaneously with parathyroidectomy.•Benign contralateral incidentalomas are to be observed.