Macromicroscopical and microanatomycal characteristics of the lymphoid formations of urinary bladder in different periods of postnatal ontogenesis

Abstract

Purpose of the investigation. Study the morphometric, age and regional features of lymphoid formations of urinary bladder in of postnatal ontogenesis.

Materials and methods. Macromicroscopical, histological methods had been studied peculiarities of microanatomy and microtopography lymphoid formations of a wall on 98 urinary bladder, at corpses of people of different age, victims from the casual reasons (a trauma, an asphyxia, etc.). Histological cuts in the thickness 5-7 microns painted by hema- toksilin-eozin, on Van Gizon, azur-2-eozin, impregnation. Glands are in close microtopographical relations with lym- phoid formations – lymphoid nodules without the centers of reproduction and diffuse lymph tissue.

Results. Quantity and the sizes of lymphoid nodules, the absolute quantity maintenance of lymphoid cells in their structure and in diffuse lymph tissue, the maintenance of small lymphocytes, mitotic cells, lymphoblast`s maximum at the age of 1-3 years then occurs gradual involution the lymphoid tissue (reduction of the sizes and quantity lymphoid nodules, etc.). Throughout all postnatal ontogenesis quantity of lymphoid cells, the length, width, the area of the lymquantity, density of their arrangement, at lymphoid nodules at mature, elderly and senile age differ from each other essentially more than at children's age.