Chapter 13: Changes in 2022 WHO classification of parathyroid tumors.

The latest 2022 WHO classification of the parathyroid tumors incorporates recent data on parathyroid pathophysiology, in particular from genetic sequencing. It highlights histological features potentially indicative of underlying genetic abnormalities, because of their implications for patient management. Immunohistochemical markers can help characterize parathyroid lesions and molecular screening. This new classification is a reminder of the imperative need to provide pathologists with comprehensive clinical and paraclinical information for accurate pathological lesion characterization.