This document discusses sinus imaging using CT scans. It first describes the different sinus cavities in the anatomy: frontal, maxillary, nasal, ethmoid and sphenoid. Second, it lists common sinus pathologies seen on CT such as sinusitis, fungal sinusitis, deviated septum, sinus polyps, mucoceles, concha bullosa and sinus cancer. Finally, it presents two case studies and asks questions to test understanding of sinus conditions and anatomy.

1. Sinus Imaging with CT
By Erik Paulson, D.O.

2. First the anatomy
• Frontal Sinus
• Maxillary Sinus
• Nasal Cavity
• Ethmoid Sinus
• Sphenoid Sinus

7. Second, the pathology
• Sinusitis
• Fungal Sinusitis
• Deviated Septum
• Sinonasal polyposis
• Mucoceles
• Concha Bullosa
• Sinus Cancer

8. Sinusitis

9. Fungal Sinusitis

10. Deviated Septum

11. Sinonasal polyposis

12. Mucoceles

13. Concha Bullosa

14. Sinus Cancer

15. Case #1
• 9 yo male c/o rhinorrhea X 1 yr. Worse when bending
over, coughing or sneezing. Hx. of multiple nose bleeds
secondary to wrestling trauma.

17. Besides rhinorrhea,
what other serious
complication can result
from this defect?

18. Case #2
• 13 year old redneck male C/O headaches for 1 month &
of expanding soft tissue mass on forehead for 1 week.

21. Uh Oh, the Double Pimp!
Name the
condition with this
set of findings?
Based on the
previous slide, in
which space is the
abnormality?