White infact is seen in -

White infarcts occur with aerial occlusions in solid organs with end-aerial circulations (e.g., hea, spleen, and kidney), and where tissue density limits the seepage of blood from adjoining patent vascular beds. Infarcts tend to be wedge-shaped, with the occluded vessel at the apex and the organ periphery forming the base ; when the base is a serosal surface, there is often an overlying fibrinous exudate. The margins of acute infarcts typically are indistinct and slightly hemorrhagic; with time, the edges become better defined by a narrow rim of hyperemia attributable to inflammation. ( Robbins Basic Pathology, 9 th edition, page 92)