[Squamous cell carcinoma arising in a papillary carcinoma of the thyroid: a case report].

Background: primary squamous cell carcinoma (scc) of the thyroid is a rare malignant tumor that needs to be distinguished from other neoplasms. Cases of papillary carcinoma merging in association with squamous cell carcinoma are extremely rare.

Aim: the characteristics of such association will be studied herein through a review of literature.