A large thyroglossal duct cyst with atypical features in a 73-year-old male: A case report.

Introduction: Thyroglossal duct cysts (TGDCs) are congenital anomalies arising from incomplete obliteration of the thyroglossal duct (TGD), typically presenting in childhood. While rare in the elderly, they can occur in adulthood and may remain asymptomatic until complications such as infection or malignant transformation arise.

Presentation Of Case: A 73-year-old male presented with progressively enlarging left-sided neck swelling over 15 years.