Table 2.
Radiological features of brain abscesses at time of presentation.
| Features of abscess | Number (%) |
|---|---|
| Number of abscesses | |
| Single | 36/47 (77%) |
| Multiple | 11/47 (23%) |
| Size of abscess | |
| Median cross-sectional size of abscess, mm2 (IQR) | 500 (199–889) |
| Location of abscess(es): | |
| Frontal | 15/47 (32%) |
| Parietal | 8/47 (17%) |
| Temporal | 7/47 (15%) |
| Occipital | 4/47 (9%) |
| Cerebellum | 2/47 (4%) |
| Other subcortical location | 2/47 (4%) |
| Multiple locations | 9/47 (19%) |
| Radiological features: | |
| Abscess wall enhancement | 42/44* (95%) |
| Dual Rim Sign present | 10/44* (23%) |
| Oedema present in one lobe | 31/47 (66%) |
| Oedema present in >1 lobe | 15/47 (32%) |
| Ventriculitis present | 5/47 (11%) |
| Sinus involvement | 7/47 (15%) |
⁎
Difference in denominator due to three patients not receiving contrast enhancement.