A working group of sixteen experts from seven countries re-evaluated the evidence of the carcinogenicity of betel-quid and areca-nut chewing and some areca-nut related nitrosamines. Betel-quid and areca-nut chewing are widely practised in many parts of Asia and in Asian-migrant communities elsewhere in the world. There are hundreds of millions of users worldwide. They evaluated betel quid with tobacco as carcinogenic to humans (Group 1) on the basis of sufficient evidence of an increased risk of cancer of the oral cavity, pharynx and oesophagus. The working group reviewed epidemiological studies of human cancer, mainly studies from India, Pakistan and Taiwan (China). Studies on betel quid with tobacco and areca nut with tobacco in experimental animals now also provide sufficient evidence of carcinogenicity. The working group also evaluated betel quid without tobacco as carcinogenic to humans (Group 1), on the basis of sufficient evidence of an increased risk of oral cancer. Studies on betel quid without tobacco and areca nut without tobacco in experimental animals now also provide sufficient evidence of carcinogenicity. Areca nut, a common ingredient of betel quid and many different chewing preparations, including those available commercially, has been observed to cause oral submucous fibrosis

Carcinomas of the larynx and hypopharynx present unique challenges when it comes to their assessment and management. Management involves the essential dilemma of optimizing cure rates while also ensuring that potential disability due to compromised airway, voice and swallowing is minimized. Treatment decisions involve careful disease assessment, judicious multispecialty decision-making, and subsequent meticulous implementation of the selected treatment modalities. The critical nature of each of these steps has led to dramatic advances in assessment techniques (radiology, endoscopy and photography, stroboscopy, narrow band imaging, contact endoscopy) and also in treatment methods (radiation therapy, combined concurrent chemo-radiation, combined sequential chemo-radiation, trans-oral CO2 laser and robotic surgery, partial laryngectomy, total laryngectomy, extended total laryngectomy). As such, treatment decisions have become increasingly complex with the twin objectives of maximizing cure as well as function preservation and are based on tumor stage, tumor location, systemic co-morbidities, nutritional status, patient priorities, and social and economic factors. This multidisciplinary book has been written by a team of editors with considerable experience and expertise in these critical areas and a deep understanding of teamwork and the strengths and limitations of individual technologies and treatments. It presents a homogeneous and unbiased view that is applicable to all specialties involved in the care of larynx and hypopharynx cancers.

Oral, Head and Neck Oncology and Reconstructive Surgery is the first multidisciplinary text to provide readers with a system for managing adult head and neck cancers based upon stage. Using an evidence-based approach to the management and treatment of a wide variety of clinical conditions, the extensive experience of the author and contributors in head and neck surgery and oncology are highlighted throughout the text. This includes computer aided surgical simulation, intraoperative navigation, robotic surgery, endoscopic surgery, microvascular reconstructive surgery, molecular science, and tumor immunology. In addition, high quality photos and illustrations are included, which are easily accessible on mobile devices. - Management protocols and outcomes assessment provide clear guidelines for managing problems related to adult head and neck oncology and reconstructive surgery. - State-of-the art guidance by recognized experts details current techniques as well as technological advances in head and neck/cranio-maxillofacial surgery and oncology. - Evidence-based content details the latest diagnostic and therapeutic options for treating a wide-variety of clinical problems with an emphasis on surgical technique and outcomes. - Multidisciplinary approach reflects best practices in managing head and neck oncology and cranio-maxillofacial surgery. - 900 highly detailed images clearly demonstrate pathologies and procedures. - Designed for the modern classroom which lets you access important information anywhere through mobile tablets and smart phones.

Notwithstanding the important role of direct clinical and endoscopic examination in modern management of pathological conditions of the larynx, radiological study the and, more specifically, cross-sectional imaging by CT and MRI make definite diagnostic contributions by virtue of their potential to display superbly the deeper extent of laryngeal lesions. Indeed, remarkable progress has been achieved during recent years in CT and MRI techniques as applied to the neck region. This book sets out to provide a sorely needed update of our knowledge of the diagnostic potential of these cross-sectional methods and constitutes a very welcome addition to our series "Medical Radiology", which aims to cover all important clinical imaging fields of modern diagnostic radiology. It will be of great interest to general and head and neck radiologists as well as to ENT surgeons and radiotherapists. Professor R. Hermans and the other distinguished contributors to this work are internationally renowned experts in the field and they have accumulated vast experi ence and a wealth of radio-pathological knowledge of the larynx over the years. I would like to congratulate them most sincerely for this outstanding volume, its comprehensive contents and its superb illustrations. I hope that this book will meet with the same great success as previously published volumes in the series. I would appreciate any constructive criticism that might be offered.

This is a collection of 48 highly useful case studies of children and adults with communication disorders.

This open access book offers an essential overview of brain, head and neck, and spine imaging. Over the last few years, there have been considerable advances in this area, driven by both clinical and technological developments. Written by leading international experts and teachers, the chapters are disease-oriented and cover all relevant imaging modalities, with a focus on magnetic resonance imaging and computed tomography. The book also includes a synopsis of pediatric imaging. IDKD books are rewritten (not merely updated) every four years, which means they offer a comprehensive review of the state-of-the-art in imaging. The book is clearly structured and features learning objectives, abstracts, subheadings, tables and take-home points, supported by design elements to help readers navigate the text. It will particularly appeal to general radiologists, radiology residents, and interventional radiologists who want to update their diagnostic expertise, as well as clinicians from other specialties who are interested in imaging for their patient care.