ABO blood groups system in laryngeal cancer patients and after survival of 3 and 5 years.

The analyzed material comprised 200 patients with cancer of the larynx with various locations of the tumour and patients surviving 3 and 5 years after operation. The frequency of ABO blood groups was analysed separately in cases of epiglottis cancer (n = 153) and glottis cancer (n = 37). The frequency of A1, A2, B, A1B, A2B, O blood groups was compared with that in 22,422 healthy individuals living in South Poland. The A2B blood group was significantly more frequent in patients with epiglottis cancer and in those with laryngeal cancer. The difference was not significant after survival of 3 and 5 years.