Normal vermiform appendix

Case contributed by Dr Hani Salam
Modality: Annotated image

Normal appendix (Ultrasound)

Modality: Ultrasound

The normal appendix consists of 5 distinct layers; the inner most echogenic layer which represents the interface of mucosa and lumen, the hypoechoic mucosal layer, the echogenic submucosal layer, the hypoechoic muscularis propria layer and the outermost echogenic serosal layer.

Case Discussion

The appendix is a worm-like blind-ended structure.

The average length of the appendix is 8-10 cm (range 2-20 cm).

Normal appendix does not exceed 6 mm in maximal outer diameter (MOD) and should be compressible. 

The normal appendix consists of 5 distinct layers; the inner most echogenic layer which represents the interface of mucosa and lumen, the hypoechoic mucosal layer, the echogenic submucosal layer, the hypoechoic muscularis propria layer and the outermost echogenic serosal layer.

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Case Information

rID: 9553
Case created: 29th Apr 2010
Last edited: 4th Dec 2015
Inclusion in quiz mode: Excluded

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