Frequency of multiple head and neck tumors on department of otorhinolaryngology of FNKV hospital from 1984 to 2009

The incidence of malignant tumors of head and neck is rising worldwide and the incidence of subsequent neoplasms in this area is increasing as well. Diagnosis can be difficult. Most patients underestimate symptoms and a large proportion of disease is diagnosed at a late stage. The common feature of head and neck tumors is their histological composition (90-95% are squamous cell carcinomas with varying degrees of differentiation) and a tendency to locally spread with the early emergence of locoregional metastases. The group most at risk is men over 45 years old, especially cigarette smokers and drinkers - especially spirits. Other risk factors include infection of HPV and HSV viruses, occupational pollution, poor nutrition, poor oral hygiene and inadequate dental prosthesis and so on. The role of prevention seems to be essential in case of head and neck cancer. According to the American Cancer Society 85-90% of head and neck tumors is caused by tobacco products. This is one of the reasons why the fight against smoking has become a major global prevention effort. The crucial role in the treatment of these tumors has a surgical treatment and radiotherapy, but chemotherapy has just a limited effect. The future way of therapy is likely to be a biological treatment. The multiple tumors mean subsequent primary..