Threads and streaks sign

The threads and streaks sign refers to an angiographic appearance of a vascularized tumor thrombus extending into the ipsilateral renal vein or the inferior vena cava from a renal cell carcinoma. This gives an appearance of linear, thread-like or string-like appearance of the involved vessel. 

Presence of this sign helps in surgical decision making. This sign can be appreciated on angiography, CT and MR imaging.

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Article information

rID: 25573
Section: Signs
Synonyms or Alternate Spellings:
  • Threads - streaks sign
  • Thread and streak sign

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