WORLDWIDE CONTACT US ABOUT US INVENTING FOR LIFE PRODUCTS RESEARCH LICENSING NEWSROOM CAREERS INVESTORS Home UNDERSTANDING HEAD AND NECK CANCER WHAT IS HEAD AND NECK CANCER? Head and neck cancer is a term used to describe a number of different malignant tumors that develop in or around the throat, larynx, nose, sinuses and mouth. IN THE U.S. ... it is estimated that more than 63,000* new cases were diagnosed in 2017. *oral cavity, pharynx and larynx WORLDWIDE ... Head and neck cancer is the sixth most common cancer and an estimated 686,000 new cases were diagnosed in 2012 AREAS OF THE HEAD AND NECK WHERE CANCERS BEGIN: Paranasal sinuses & nasal cavity Oral cavity Salivary glands Larynx Pharynx THE MEDIAN AGE AT DIAGNOSIS IS BETWEEN THE AGES OF 50-59 THE INCIDENCE OF HEAD AND NECK CANCER IS IN MEN THERE ARE TWO FACTORS THAT GREATLY INCREASE THE RISK OF HEAD AND NECK CANCER: 85 % Tobacco Use 85 percent of head and neck cancer cases are linked to tobacco use, and secondhand smoke may also increase a person's risk. Alcohol Frequent and heavy alcohol consumption. OTHER RISK FACTORS INCLUDE: Prolonged sun exposure Human papillomavirus (HPV) Epstein-Barr virus Marijuana use Gender Age Poor oral/dental hygiene Environmental/occupational inhalants Poor nutrition Gastroesophageal and laryngopharyngeal reflux diseases Weakened immune system ADDITIONAL RESOURCES Head and Neck Cancer Alliance Oral Cancer Foundation Support for People with Oral and Head and Neck Cancer [SPOHNC] American Cancer Society American Head and Neck Society Centers for Disease Control and Prevention Updated August 2018 Copyright. © 2009-2018 Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc. All rights reserved. Forward-Looking Statement Privacy Terms of Use Site Map

WORLDWIDE CONTACT US ABOUT US INVENTING FOR LIFE PRODUCTS RESEARCH LICENSING NEWSROOM CAREERS INVESTORS Home YOU, YOUR PETS, AND PARASITES About Us Corporate Responsibility Leadership Board of Directors Executive Committee Our Work Antimicrobial Resistance Diabetes Hepatitis C HIV Oncology Vaccines Perspectives How We Operate Code of Conduct Compliance Privacy Transparency and Privacy Internet Privacy Policy Cookie Privacy Commitment Cross Border Policy Employment Privacy & Data Protection Diversity Employee Diversity Supplier Diversity Views and Positions Access and Affordability Access to Investigational Medicines Innovation Quality and Safety Sales and Marketing Responsible Public Policy and Advocacy Our History Our People Featured Stories Your pet is your friend and companion. The parasites that might infect them, however, are most definitely not. It is fairly common for your dog or cat to get a parasite (or two or three) at one point in their lives. And as a pet owner, it’s up to you to be informed about what can infect, and possibly harm, your pets. Test your parasite knowledge below. SHARE: Copyright. © 2009-2018 Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc. All rights reserved. Forward-Looking Statement Privacy Terms of Use Site Map Published April. 2015