<p class="MsoNormal"><span lang="EN-US" style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;">This book constitutes the proceedings of the MICCAI 2024 Challenge, FLARE 2024, held in Conjunction with MICCAI 2024, in Marrakesh, Morocco, during October 2024.&#xa0;</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;">The 20 full papers included in this book were carefully reviewed and selected from 24 submissions. They describe the solutions the participants found for automatic abdominal organ and pan-cancer segmentation using the official training dataset released for this pupose.</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;">This challenge focuses on both organ and pan-cancer segmentation, including three subtasks:</span></p><p class="MsoNormal"><span lang="EN-US" style="font-size: 11.0pt; font-family: 'Calibri',sans-serif;">Subtask 1: Pan-cancer segmentation in CT scans<br>Subtask 2: Abdominal CT organ segmentation on laptop<br>Subtask 3: Unsupervised domain adaptation for abdominal organ segmentation in MRI Scans</br></br></span></p>