Relationship between ABO blood groups and head and neck cancer among Greek patients.

Purpose: We examined the association of ABO blood groups with the different types of head and neck cancers.

Methods: 195 diagnosed cases and 801 controls were selected from a Greek tertiary cancer center. Information regarding type of head and neck cancer and ABO blood group was collected and registered.

Human papillomavirus frequency in oral and oropharyngeal cancer in Greece.

Unlabelled: The presence of human papillomavirus (HPV) was successfully analyzed by both general and type-specific HPV PCR in 103 samples from 115 patients diagnosed with oral and oropharyngeal cancer in Greece during the years 1986-2007.

Results: In total 13/103 (13%) tumours were HPV-positive and the majority of these were HPV-16-positive. Of the tonsillar cancer samples, 12/28 (43%) were HPV-positive and, notably, 1/6 (17%) collected between 1992-1998 and 11/22 (50%) collected between 2000-2007 were HPV-positive.