Case 2: Candidiasis
29 year old man with acute myeloic leukemia.
CT: Concentric ring enhancement
CT shows concentric ring enhancement of candida microabscess in an immunosuppressed patient. Note inner vascularity of arterial and portal venous phase; typical additional peripheral enhancement on equilibrium phase filling in the previously hypodense perifocal rim, representing fibrous capsule, and not edema.