Coexistence of Thyroglossal Cyst and Thyroid Disease in Adults: Surgical Outcomes From A Single Center.

Objectives: Thyroglossal cysts (TGCs) usually present during childhood and before the age of 30, however, they can also be seen in adults, even in advanced age. Nodular thyroid disease is also common in adults. In the literature, there is an ongoing debate regarding the differences in clinical presentation, gender, and postoperative recurrence of TGC between children and adults. In this study, we aimed to process the data of adult patients who underwent surgery for TGC in our clinic, along with the data on concurrent thyroid disease and thyroid surgery.

Methods: The data of patients over 18 years old who were operated on for TGC at the General Surgery Clinic of Sisli Hamidiye Etfal Training and Research Hospital between 2018 and 2024 were retrospectively evaluated.

Results: A total of 16 patients with a mean age of 43.94±12.98 (21-67) years, were included in the study (11 F/5 M). The diagnosis of TGC was made in 12 patients (75%) by ultrasonography (USG), in 1 patient (6.25%) by computed tomography, in 1 patient (6.25%) by magnetic resonance imaging (MRI), and in 2 patients (12.5%) incidentally intraoperatively. 13 patients (81.25%) underwent the Sistrunk procedure, and 3 patients (18.75%) underwent cyst excision. Among the 16 TGC patients, papillary thyroid cancer in the cyst was detected in one patient (6.25%) preoperatively. During preoperative evaluation, nodular thyroid disease was found in 12 patients (75%). Of these, papillary thyroid cancer was detected in 3 patients (18.75%) preoperatively. Of the TGC group, 3 (18.75%) underwent thyroidectomy for thyroid malignancy, and five (31.25%) underwent additional thyroid surgery for nodular thyroid disease. The patients were followed for a mean of 22.63±18.32 months (3-67 months), and no recurrence of TGC was observed during the follow-up period.

Conclusion: In patients with TGC, thyroid diseases and the requirement for thyroidectomy due to benign or malignant thyroid disease are not uncommon. Patients with TGC should be evaluated for thyroid disease before surgical treatment. While the Sistrunk procedure is the standard surgical technique in the treatment of TGC, in adults, if the cyst terminates below the hyoid bone, total cyst excision without removing the central portion of the hyoid bone may be sufficient.