Updated 1st April 2026 This section of my website has been published since 2015 but the most recent update to the World Health Organisation (WHO) Classification of for Digestive Systems is about to be published.  You may see these important publications called ‘Blue Books’. The main changes worth mentioning here is the addition of two … Continue reading The Classification, Grading and Staging of Neuroendocrine Neoplasms (incorporating WHO 2026 classification changes)