[Malignant neoplasms and potentially malignant hyperplasia in children and adolescents from material at the Department of Pathomorphology, Institute of Mother and Child during 1978/79-1983].

531 cases of malignant neoplasms and potentially malignant hyperplasia in children and adolescents diagnosed in the Department of Pathomorphology, Institute of Mother and Child between 1978/79 and 1983 are presented. Only patients treated in this hospital were included into the study. The most common diagnoses were neuroblastoma (68 cases), rhabdomyosarcoma (62 cases), nephroblastoma (56 cases), osteogenic sarcoma (47 cases), non-Hodgkin lymphoma (41 cases). Besides neoplasms most typical for childhood and adolescence the rare less typical cases were also seen.