Τρίτη 30 Αυγούστου 2016

Diabetes mellitus, metformin and head and neck cancer

Head and neck cancer (HNC) includes tumours of the oral cavity, oropharynx, hypopharynx, and larynx. Nasopharyngeal cancer is also a HNC sub-site but is usually considered a separate disease with a distinct aetiology and particular characteristics [1]. Approximately 600,000 cases of HNC are diagnosed each year, and HNC accounts for 4% of cancer mortality worldwide [2]. More than 90% of HNC are squamous cell carcinoma [3]. The main risk factors associated with HNC are smoking and alcohol consumption, and the interaction between these factors can increase the risk of HNC [4].

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