PP 135. Papillary Thyroid Cancer Evolving from Thyroglossal Duct Cyst: Case Report
Z. Kilbas, S. Gorgulu, R. Yildiz, O. Mentes, E. Ozturk, Y. Peker
17:54 - 18:00h
at Lanchid Room
Categories: Endocrine Surgery, Poster Session
Session: Poster II (P4) - Varia
Background
Thyroglossal duct cyst (TDC) in adults is uncommon and TDC carcinoma is a very rare finding. Its presentation is similar to that of a benign cyst, so, the diagnosis is usually made postoperatively after histological examination. We aimed to find answers to management dilemmas regarding the roles of total thyroidectomy in papillary thyroid carcinoma evolving from TDC by means of a case.
Material and Methods
Herein we present a very rare cases of PTC evolving from the TDC
Result
CASE: A 21-year-old man presented to with the diagnosis of papillary thyroid cancer (PTC) evolving from TDC. His past medical history revealed a TDC excision one month before due to midline neck mass. After gathering the diagnosis of PTC evolving from TDC, he was sent for further investigation. Physical examination revealed no palpable nodules in thyroid gland and there
was not any palpable lymph nodes. Thyroid scintigraphy, thyroid and cervical ultrasonography were performed. Thyroid ultrasound showed a hypoechoic, 6-mm solid nodule in right lobe. Since FNA revealed a synchroneous papillary cancer in right lobe of thyroid gland, total thyroidectomy with Sistrunk's procedure was performed. The final postoperative pathology reported an 6 mm papillary
cancer in the right lobe of the thyroid. The patient was treated with radioactive iodide and thyroid suppresion therapy was given as an adjuvant treatment
Conclusion
The occurrence of PTC in a TDC is rare. To exclude a synchroneous tumor in thyroid gland, further investigation is mandatory and total thyroidectomy with Sistrunk's procedure is the optimum
treatment modality.
