克氏外科学19版chapter 57.pdfVIP

CHAPTER 57 THE SPLEEN Julie Shelton and Michael D. Holzman splenic vessels as they branch within the organ and merge with splenic anatomy these trabeculae. The arterioles branch into even smaller vessels splenic function and leave these trabeculae to merge with the splenic pulp, where splenectomy their adventitia is replaced by a covering of lymphatic tissue that late morbidity after splenectomy continues until the vessels thin to capillaries. These lymphatic prophylactic treatment of splenectomized patients sheaths make up the white pulp of the spleen and are inter- spersed among the arteriolar branches as lymphatic follicles. The white pulp then interfaces with the red pulp at the marginal zone. It is in this marginal zone that the arterioles lose their SPLENIC ANATOMY lymphatic tissue and the vessels evolve into thin-walled splenic The spleen is an 80- to 300-g organ that initially develops from sinuses and sinusoids. The sinusoids then merge into venules, mesenchymal cells in the dorsal mesogastrium during week 5 of draining into veins that travel along the trabeculae to form embryogenesis and settles into the left uppermost aspect of the splenic veins that mir