Frimann-Dahl sign

Frimann-Dahl sign is a diagnostic sign demonstrated when three dense lines representing the sigmoid walls seen converging to the site of obstruction in sigmoid volvulus and associated with empty rectal gas.

Share article

Article information

rID: 40965
Section: Signs
Synonyms or Alternate Spellings:
  • Frimann-Dahl's sign

Support Radiopaedia and see fewer ads

Cases and figures

  • Drag
    Case 1
    Drag here to reorder.
  • Updating… Please wait.

    Alert accept

    Error Unable to process the form. Check for errors and try again.

    Alert accept Thank you for updating your details.