Friday 8 November 2013

ACUTE APPENDICITIS




              USG FEATURES OF ACUTE APPENDICITIS


QAll are USG features of acute appendicitis except
a.nonperistaltic bowel loop originating from caecum
b.blind- ending structure
c.compressible
d.anteroposterior diameter=>7mm

ANS----C====COMPRESSIBLE









  • Graded compression US is a well-documented technique for examination of the appendix.
  • The US probe is applied with gradually increased pressure over the right iliac fossa in order to displace bowel loops and examine the appendix.
  •  . US of acute appendicitis has been reported to have a sensitivity of 78–98 per cent and specificity of 85–98 per cent. 
  • The most sensitive sign is that of a noncompressible appendix with a diameter of 7 mm or greater




ACUTE APPENDICITIS: US SIGNS
  • Blind-ending tubular structure
  •  Non-compressible
  •  Diameter 7 mm or greater
  •  No peristalsis
  • Appendicolith casting acoustic shadow
  • High echogenicity surrounding fat
  • Surrounding fluid or abscess
  • Oedema of caecal pole
  • Maximal tenderness over appendix







Posted by Dr. Nagendra Kumar Sinha on Friday,8th November 2013


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