Histopathology results
Sections of the submitted sample of jejunum contained moderate to large numbers of eosinophils and fewer mononuclear cells within the mucosa and submucosa. Also present within the submucosa and between the circular and longitudinal layers of tunica muscularis was mild to moderate edema and moderate to marked amounts of hemorrhage, which extended into the serosa and mesentery. The vessels within the serosa and mesentery were markedly dilated and engorged with blood and fibrin. An area between the longitudinal and circular layers of the tunica muscularis had proliferative fibrovascular tissue and was partially separated. Several small and large caliber arteries exhibited myxomatous changes and myointimal bodies within the intima and subintimal layers of the vessels.