The current incarnation of this Fascicle builds on its predecessors and is meant to serve as an up-to-date text-rich atlas of tumors involving the upper aerodigestive tract and ear. Emphasis in the current work remains focused on light microscopy, but ancillary diagnostic techniques, including electron microscopy, immunohistochemistry, and molecular diagnostics, are presented in detail where appropriate. This volume will undoubtedly serve as an invaluable diagnostic reference for years to come.