Extranodal Head and Neck Non-Hodgkin's Lymphomas in Children in Finland

Abstract

During the 20-year period from 1961 to 1980, 17 cases of extranodal head and neck non-Hodgkin's lymphoma in children under 15 years of age were diagnosed in Finland. Eight cases had tumours in tonsils or nasopharyngeal adenoids and 9 cases lymphomas of other sites of the head and neck. The age-adjusted annual incidence rate for all cases was 0.69 and for tumours of the pharyngeal lymphatic tissue 0.35 per 10⁶ children. Seven of the 17 tumours were undifferentiated lymphomas (Burkitt's and non-Burkitt's types) and 5 lymphoblastic lymphomas. The overall 5-year disease-free survival rate was 37%. Five of the 9 patients with tonsillar or adenoid lymphomas were disease-free more than 5 years.