Preface

This book is an excellent source of information on voice and swallowing disorders. It describes not only the physiologic and pathologic aspects of various voice and swallowing disorders but also the differential diagnoses and clinical management of these disorders. The chapter on voice changes due to various non-neoplastic lesions of vocal cord is very interesting. As I was editing this book, I thought that certain chapters were of paramount importance in clinical practice, particularly oropharyngeal dysphagia, dysphagia due to cervical facial tumors, radiationinduced dysphagia, and dysphagia in patients with a stroke. This book can serve as an invaluable reference to practicing gastroenterologists, oral surgeons, and ear, nose, and throat surgeons.

> **Monjur Ahmed** Thomas Jefferson University, Philadelphia, USA

Section 1
