CARCINOMA IN A THYROGLOSSAL DUCT CYST

Abstract

Thyroglossal duct cyst (TGDC) is most common congenital benign cervical mass. Carcinoma arising  in the TGDC accounts for only about 0.7 to 1.5%  of all TGDC. Presentation of TGDC  carcinoma  is similar to that of benign duct cyst. Papillary carcinoma is common carcinoma in TGDC , median  age of presentation is 40 years , with female to male ratio of 3:2. Diagnosis of TGDC carcinoma is often based on pathological analysis of masses. FNAB have only 53% true positive rate in a diagnosis. USG, CT scan, thyroid scan play important role in diagnosis of malignancy. Sistrunks’ procedure, total thyroidectomy with or without lymphnode dissection and treatment with radioactive iodine have to considered according to clinical and microscopic finding.

Keywords: Papillary carcinoma, sistrunks' procedure, Thyoglossal duct cyst