1. Appendix

2. FOR DIAGNOSIS, NEED >6MM DIAMETER, NON COMPRESSIBLE, AND PROVEN BLIND ENDED TUBE. Pockets of free fluid, ‘thyroid sign’, bright fat, faecolith and increased colour flow are suspicious but not enough by themselves.

3. NOTE HYPERECHOIC FAT OUTLINING APPENDIX

5. Common to see a spot of gas in central lumen, but not a prerequisite.

6. NOTE LIKELY FAECOLITH

7. ‘THYROID IN BELLY’ SIGN

8. SIGNS SUGGESTIVE OF PERFORATION – POCKETS OF FREE FLUID, BRIGHT FAT, NON-MOTILE, NON SPECIFIC MASS TENDER TO SCAN

9. RIF IN PERFORATED APPX…..WEIRDNESS

10. But beware traps
Apparent blind ending tube is small bowel in transverse
Apparent faecolith in tube again in small bowel

11. Remember to scan in transverse
Large and floppy suggests small bowel

12. Mesenteric nodes can look like non compressible bowel

13. Put low flow doppler on and check alternate plane
Nodes often have small feeder vessel to centre