On sectioning of an organ at the time of autopsy, a focal, wedge-shaped firm area is seen accompanied by extensive
hemorrhage, with a red appearance. The lesion has a base on the surface of the organ. This findings is typically of
Red infarcts are seen in
Arterial obstruction
In organs that have dual blood supply
Lung* and Liver*
Arterial obstruction
In tissues that have collateral vessels permitting some continued flow into the area although the amount is not
sufficient to prevent infarction.
Intestine*
Venous infarcts
White (or pale) infarcts are seen
Arterial obstruction in solid organs that lack significant collateral circulation. e.g. - heart
spleen
kidney
brain*
Heart with coronary thrombosis
Lung with pulmonary thromboembolism
Liver with hypovolemic shock
Kidney with septic embolus