Comet sign

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[edit] Discussion of Comet sign

  • The comet sign has been used at CT to aid in the differentiation of a phlebolith from a stone in the ureter.
  • The calcified phlebolith represents the comet nucleus and the adjacent, tapering, noncalcified portion of the vein is the comet tail.
  • The reliability of the comet sign is not as great as that for the soft-tissue rim sign

[edit] Images

Patient #1

[edit] See Also

[edit] External Links

[edit] References for Comet sign