Profile of malignant lesions amongst children in North Bengal.

in the incidence, type, response to therapy and mortality rate of some malignant neoplasm. For example, the Chinese Americans revealed a significantly lower mortality in leukemia but a higher mortality rate in nonHodgkin lymphoma (NHL) than for the Caucasion population(l). It is well known that acute lymphoblastic leukemia in black children is less responsive to therapy than in white. Keeping this in mind and also noticing a very high incidence of retinoblastomas and acute leukemias among children of different ethnic groups in the sub-Himalayan region of North Bengal, this study was conducted.