Introduction -- Development, anatomy and histology of the mesentery -- The mesenteric intersitium -- Mesnteric organ lymphatics -- The mesentery as an immunological organ -- Bacterial translocation to the mesentery -- The microbiome of mesenteric lymh nodes -- Mesenteric Adenopathy and adenitis -- The effects of mesenteric inflammation on the intestine -- The mesentery as an ADME organ -- Targteing the mesentery using surgery -- Future directions.