《Slide 192.》Hemorrhagic infarction, Ileum
A. Brief Descriptions：
Red or hemorrhagic infarcts are encountered usually (1) with venous occlusions,(2) in loose tissues,(3) in tissues with a double circulation, and (4) in tissues previously congested.
Acute occlusion of one of the three major supply trunks of the intestines (celiac, superior and inferior mesenteric arteries) may lead to infarction of intestine.
B. Gross Findings：
The infarcted bowel appears intensely congested and dusky to purple-red and the wall becomes edematous, thickened, rubbery, and hemorrhagic.
C. Micro Findings：
Sloughing necrosis of the mucosa.
Inflammatory response into mucosa and submucosa.
Robbins Pathologic Basis of Disease, 6th ed. P.822.
【 Fig. 192-1 (LP)】The bowel wall becomes edematous, thickened, rubbery, and hemorrhagic.
【 Fig. 192-2 (LP)】Sloughing necrosis of the mucosa.
【 Fig. 192-3 (LP)】Interstitial hemorrhage.
【 Fig. 192-4 (HP)】Inflammatory response into mucosa and submucosa.