- wedge shaped areas of decreased attenuation which extend to the surface of the spleen - usually involve a portion of the spleen - CT appearance can vary over time
"Segmental splenic infarction is a rare manifestation of blunt splenic trauma. The diagnosis is readily made using contrast-enhanced CT. The majority will decrease in size on follow-up CT and resolve without clinical sequelae. Resolution of infarction is also seen and these cases are best described as temporary perfusion defects."
CT diagnosis of splenic infarction in blunt trauma: imaging features, clinical significance and complications. Miller LA, Mirvis SE, Shanmuganathan K, Ohson AS. Clin Radiol. 2004 Apr;59(4):342-8.