From skin to thyroid: incidental finding of dual-variant papillary thyroid carcinoma in a patient with squamous cell carcinoma.

Dear Editor, The occurrence of multiple primary neoplasms in a single patient is rare but well documented, and the incidental discovery of a previously undiagnosed thyroid carcinoma during lymph node dissection for another primary malignancy presents a unique diagnostic challenge. Previous reports have described incidental detection of papillary thyroid carcinoma during neck dissection for squamous cell carcinoma (SCC) of the tongue, via Tc-99m prostate-specific membrane antigen imaging in a patient with a negative fine-needle aspiration (FNA) result, and during oncologic staging for esophageal cancer. [...].