[Structure of surgical and biopsy material according to the findings of the centralized pediatric autopsy laboratory of Minsk].

Structure of the surgical and biopsy specimens from 9765 children aged from 1 day to 14 years was studied. According to the data obtained at the pediatric autopsy laboratory, organs of the alimentary, reproductive, urinary systems, skin, lungs and bones are most frequently subjected to an intravital histologic study. Most common among general pathologic processes are: inflammation (66,3%), tumours (13,5%) and congenital malformations (4,7%). The incidence of benign tumours is 81,5%, of malignant ones--5,2%, and that of tumour-like processes--13,3%. In most cases (49,9%) the tumours are of dysontogenetic origin. Such congenital malformations as atresia and stenosis on different esophageal levels, as well as aganglionosis, renal and ureteral dysplasias, ovarian dysplasia and hypoplasia occur most frequently. Inflammatory processes, mainly nonspecific ones, localize in the vermiform appendix, lymph nodes, bones, kidneys, lungs. Hyperplastic processes, immune reactions and reactive states (lymph nodes, tonsils) are not infrequent.