September 2025—In a CAP session last year on timely topics in thyroid tumors, Zubair W. Baloch, MD, PhD, shed light on poorly differentiated and differentiated high-grade follicular-derived carcinomas. “This is something new in the WHO 5th edition of the thyroid tumor classification scheme, and I think it’s about time that we have a different category and not really split them too much,” said Dr. Baloch, an editor and author of the 5th edition of the WHO Classification of Endocrine and Neuroendocrine Tumors. Why the category is new and what to know was part of the timely topics session, for which he paired up with Nikolina Dioufa, MD, PhD, MSc, who spoke about noninvasive follicular thyroid neoplasm with papillary-like nuclear features and follicular variant of papillary thyroid carcinoma.