This site is intended for healthcare professionals

Sign in
Go to /sign-in page

You can view 5 more pages without signing in

Plain radiological signs

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

The radiological signs in acute appendicitis are very variable and non-specific. Plain films can help to eliminate components of the differential diagnosis such as air under the diaphragm for perforated peptic ulcers. Erect and supine films are taken. There is no role for contrast studies.

Reported signs include:

  • fluid levels localised to the caecum and the right terminal ileum indicating inflammation in the right lower quadrant of the abdomen
  • localised ileus, with gas in the caecum, ascending colon or terminal ileum
  • increased soft tissue density in the right lower quadrant
  • blurring of the right flank stripe produced by the fat interposed between peritoneum and transversus abdominis
  • a faecolith in the right iliac fossa
    • the majority are radio-opaque
    • occur in about 10% of those with appendicitis
    • often mistaken for ureteric calculus or gallstones
  • a gas-filled appendix
  • free intraperitoneal gas

Create an account to add page annotations

Create a free account

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.