title: Pre-enhancement ring density in resolving intracerebral hematomas.
abstract: Pathologic material is presented demonstrating a pre-enhancement ring density in later stages of hematoma resolution on CT. This pre-enhancement ring density is due to aggregates of hemosiderinladen macrophages.
mesh_terms: D000368:Aged; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006097:Granulation Tissue / Q000473:pathology; D006406:Hematoma / Q000000981:diagnostic imaging* / Q000473:pathology; D006485:Hemosiderin; D006801:Humans; D008264:Macrophages / Q000473:pathology; D008297:Male; D011856:Radiographic Image Enhancement; D014057:Tomography, X-Ray Computed
chemical_list: D006485:Hemosiderin