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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
This eighty-ninth volume of the IARC Monographs is the third and last of a series on tobacco-related agents. Volume 83 reported on the carcinogenicity of tobacco smoke and involuntary smoking (second-hand smoke or environmental tobacco smoke) (IARC 2004a). Volume 85 summarized the evidence on the carcinogenic risk of chewing betel quid with and without tobacco (IARC 2004b). That volume explored the variety of products chewed in South Asia and other parts of the word that contain areca nut in combination with other ingredients, often including tobacco. In this eighty-ninth volume, the carcinogenic risks associated with the use of smokeless tobacco, including chewing tobacco and snuff, are considered in a first monograph. The second monograph reviews some tobacco-specific nitrosamines. These agents were evaluated earlier in Volume 37 of the Monographs (IARC 1985) and information gathered since that time has been summarized and evaluated.
This comprehensive multidisciplinary book examines all aspects of cancers of the mouth and oropharynx with the aim of equipping advanced students and practitioners in the early stages of specialist training with an up-to-date guide and reference. A multinational team of authors – all experts in the field of oral oncology – provide illuminating contributions on the full range of relevant topics: epidemiology, risk factors, clinical features, staging and prognostic factors, pathology, diagnostic techniques, disease prevention, surgery, radiotherapy, and chemotherapy. Molecular biology, molecular targeted therapies for advanced cases, and future diagnostic and prognostic applications of new technologies also receive careful attention. In providing a wealth of essential information and guidance in a practical format, the book will be a superb asset for senior graduate students in dentistry and specialist trainees in head and neck oncology. It will also be of high value for the many physicians, surgeons, pathologists, dentists, and specialists involved in the prevention, diagnosis, and management of squamous cell carcinomas of the oral cavity and oropharynx.
This is the first of four volumes that together offer an authoritative, in-depth reference guide covering all aspects of the management of oral cancer from a multidisciplinary perspective and on the basis of a strong scientific foundation. This volume, on tumor biology, epidemiology, etiology, emerging role of cancer stem cells and prevention of oral cancer, opens by discussing oral carcinogenesis in general and the role of particular carcinogens and human papillomavirus. Global epidemiology and changes in disease prevalence are then addressed. Up-to-date information is provided on emerging cancer biomarkers, and the biologic basis of personalized therapy is explained. Histopathological features of malignant and premalignant neoplasms and their relevance to management are described. Further chapters focus on the current status of chemoprevention, the management of oral submucous fibrosis, and the value of various diagnostic adjuncts. The volume concludes by critically evaluating the efficacy of oral screening methods. Volume 1: Biology, Epidemiology, Etiology, and Prevention Volume 2: Diagnosis and Management Volume 3: Oral and Maxillofacial Reconstructive Surgery Volume 4: Rehabilitation and Supportive Care
Tumor biology varies at different subsites in the oral cavity, and therefore carcinoma of the gingivo-buccal sulcus (also known as Indian cancer) behaves differently from carcinoma of the tongue. Oral cancer is very often diagnosed at an advanced stage with neck metastasis, and most cases have a guarded prognosis. Loco-regional recurrences are frequent and morbidity following treatment is considerable. However, results have improved in recent years, particularly in early and certain advanced stages, due to better imaging and case selection, improved surgical techniques, including those for reconstructive surgery, a multidisciplinary team approach and a better understanding of tumor biology and prognostic factors. This book comprehensively and systematically reviews all these aspects of diagnostic and therapeutic advances in oral cancer, particularly discussing early detection, epidemiology, chemoprevention and current research. Written by specialists who are active leaders in basic sciences or clinical fields, the chapters address individual and collective issues in managing patients with oral cancer, and provide insights into various treatment approaches. The authors share their knowledge and experience and provide extensive literature sources to encourage clinicians to be flexible, innovative and help them make the best, educated decisions for individual patients.
Bioactive compounds are abundant in nature, particularly in plants, which have the capacity to synthesize phenolics, flavonoids, caffeine, carotenoids, and much more. Different bioactive compounds can change or alter the life process due to their different biological activities. This book examines bioactive compounds and their sources, structures, and potential uses in various industries, including pharmaceuticals, medicine, cosmetics, and food processing.
This book aims to provide the reader with a complete understanding of the development of oral cancer by explaining the role of a wide variety of implicated risk factors and identifying their gene targets and key regulators. Some of the discussed risk factors are well known, including smoking, alcohol, betel quid chewing, and oncoviruses such as high-risk human papillomaviruses and Epstein-Barr virus; however, careful attention is also paid to less widely recognized factors, such as Qat chewing and yerba Mate consumption. The book concludes by describing and evaluating the most important strategies currently available for the prevention of oral carcinogenesis in humans. In presenting the most up-todate research and knowledge on these topics, this book will serve as a valuable source of up-to-date information for oncologists, cancer scientists, and medical students.
This book comprehensively covers the science and policy issues relevant to one of the major public health disasters of modern times. It pulls together the aetiology and burden of the myriad of tobacco related diseases with the successes and failures of tobacco control policies. The book looks at lessons learnt to help set health policy for reducing the burden of tobacco related diseases. The book also deals with the international public health policy issues which bear on control of the problem of tobacco use and which vary between continents. The editors are an international group distinguished in the field of tobacco related diseases, epidemiology, and tobacco control. The contributors are world experts drawn from the various clinical fields. This major reference text gives a unique overview of one of the major public health problems in both the developed and developing world. The book is directed at an international public health and epidemiology audience includng health economists and those interested in tobacco control.