Serological and immunohistological assessment of Epstein-Barr virus infection in Sicilian patients with suspected nasopharyngeal carcinoma.

An evaluation of antibodies to Epstein-Barr virus (EBV) was carried out on 18 patients with suspected nasopharyngeal carcinoma (NPC). With one exception, 9 patients, with histologically confirmed NPC, had high levels of IgG and IgA antibodies to EBV-related antigens, VCA and EA. Out of 4 patients, without histologically confirmed NPC and an antibody pattern compatible with the disease, one developed NPC 22 months later. These data confirm the usefulness of serological markers as a diagnostic aid in NPC and indicate that the occurrence of this malignancy might be higher in Sicily than in low-risk zones.