• CT of Acute Appendicitis in  a Nutshell

• Modality

  • CT A P with IV contrast

• Major Criteria

  • appendiceal dilatation (>6 mm diameter) ⁴
  • wall thickening (>3 mm) and enhancement
  • thickening of the cecal apex: cecal bar sign, arrowhead sign
  • periappendiceal inflammation
    • fat stranding
    • thickening of the lateroconal fascia or mesoappendix
    • extraluminal fluid
    • phlegmon (inflammatory mass)
    • abscess
  • focal wall non enhancement representing necrosis (gangrenous appendicitis) and a precursor to perforation

• Minor Criteria

  • appendicolith
  • periappendiceal reactive nodal enlargement

• Complications

  • Abscess
  • Perforation
  • Peritonitis

• Case Study – The Story  a Powerpoint

  • See test Example of APPENDICITIS 
  • 001 Appendix 28 year old Female with Ruptured Appendicitis
    002 Appendix 25F Pregnant Appendicitis
    003 Appendix 96 M Perforated Appendix

• OLA

  • Appendicitis

• Spectrum

  • Spectrum of Acute Appendicitis

References and Links

• National Guidelines
  • ACR Guidelines
• Consistent References 
  • Radiopedia
  • Radiographics
    • Atypical Findings on CT
    • In Children
• Other 
  • CT and US in the Diagnosis of Appendicitis: An Argument for CT
• You Tube
  • • Radiology Channel
    • EM in 5
    • Radiology Capsules