A Rare Case Report of Thyroglossal Duct Cyst Carcinoma Coexisting with Thyroid Carcinoma in an Adolescent

Figure 2

(a) Papillary thyroid carcinoma arising in a thyroglossal duct cyst (left) exhibits classical papillary morphology with invasion of the cyst wall (indicated by black arrows). The cyst is lined by stratified squamous epithelium (indicated by red arrowheads), and normal thyroid follicles are present in the cyst wall (indicated by a black circle) (H&E stain, 40x magnification). (b) The carcinoma exhibits tall cell features in approximately 20% of the tumor (H&E stain, 200x magnification).