Figure 1: In this patient, there are multiple, randomly distributed lesions scattered throughout bilateral cerebral hemispheres. The lesions demonstrate a ring pattern, or rim of peripheral restricted diffusion and central hypointense DWI signal (top row). The rim pattern of signal abnormality carries through on all sequences (middle row). On the SWI image (bottom row left), there is central hypointense signal which often corresponds to a combination of hemorrhage and fungal elements. As in most patients with aspergillosis, there is little to no peripheral enhancement (bottom row right).
- Saprophytic opportunistic infection
- Infection typically caused by Aspergillus fumigatus
- Septate, branching hyphae that show dichotomous branching and irregular, non-paral...