3.3 Imaging
All 33 patients underwent a post-contrast head CT and temporal bone HRCT prior to surgery. Imaging demonstrated 17 (51%) children had SPA alone, 6 (18%) had SPA with SST, 4 (12%) had SPA with peri-sinus collection, 4 (12%) had SPA , SST and peri-sinus collection, 1 (3%) child had SPA SSTSST with epidural abscess and 1 (3%) child had SPA + with epidural abscess.