Shurkus E A, Borisov A V
Morfologiia. 1997;111(2):55-8.
The study was performed in 77 fetuses and 10 cadavers of newborns using the complex of methods, the basic one being the total preparation after A. V. Borisov. Thoracic duct lymphangions develop craniocaudad in 13-18 week fetuses. Maximal number of intervalvular segments (up to 35) was observed during the middle of intrauterine development. They achieve definitive number (15-20) by the moment of birth which correlates with active formation of muscular base. The wall of duct in fetus has constructions of capillary, postcapillary, non-muscular and muscular type vessel. Lymphangion is primitive in 13-28 week fetuses and definitive in 29-36 week ones. Local peculiarities of lymphangion myoarchitectonics were shown. The role of accessory beds of the duct in lymph passage was demonstrated.
