Fig. 2.

Neuro-imaging to demonstrate the anatomical relationship between sinus infection and brain abscess. A: Coronal high resolution CT image (shows left-sided otomastoiditis with focal breach of the bony roof of the mastoid. B: Coronal, gadolinium enhanced T1-weighted image, performed in the same patient 10 days after the CT scan, shows a small cerebral abscess inferiorly in the left temporal lobe adjacent to the infected mastoid (for panels A and B, patient ID: BA04). C: In a different patient, an axial, gadolinium enhanced T1-weighted image demonstrates a left frontal brain abscess secondary to adjacent left frontal sinusitis with focal breach of the posterior wall of the sinus (for panel C, patient ID: BA21).