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*