cases, thyroid Week 400: Case 6 April 26, 2023 pathadmin 1. Presented by William Westra, M.D. and prepared by Andrea Subhawong, M.D.50-year-old woman with a 4 cm solitary thyroid noduleFollicular adenoma, signet ring variantFollicular carcinoma, signet ring variantMetastatic renal cell carcinomaParathyroid adenoma 1. Presented by William Westra, M.D. and prepared by Andrea Subhawong, M.D.50-year-old woman with a 4 cm solitary thyroid nodule