[New approaches to the study of the pathological anatomy in diseases of fetal and neonatal periods].

New forms of the pathology analysis are suggested to develop and introduce into the practice of pediatric pathologists in order to decrease the level of perinatal mortality in USSR: 1) the study of causes of death in children weighing from 500 to 999 g; 2) anatomopathological determination of the gestational period; 3) pathomorphology of transitional conditions in newborns; 4) early autopsies of foetuses and newborns, improving the reanimation pathology diagnosis; 5) the increase of the thoroughness in the study of placenta and reconsideration of the nosological approaches in the evaluation of the placenta pathology; 6) current etiological diagnosis of infectious diseases including HIV-infections.