Polo mint sign (venous thrombosis)

Dr Ian Bickle et al.

The polo mint sign is a description given to a venous thrombosis on contrast enhanced CT imaging.  When viewed in the axial plane, a thin rim of contrast persists around a central filling defect due to thrombus. This gives an appearance like that of the popular mint sweet, the polo, also referred to as the 'mint with a hole'.

It is originally described to refer to the appearances of a pulmonary embolus on CTPA, but the appearances are the same for any venous thrombosis, such as in the portal vein.1

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Article Information

rID: 21056
Section: Signs
Tags: stub, cases, refs
Synonyms or Alternate Spellings:
  • Polo mint appearance

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Cases and Figures

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    Figure 1: photograph - polo mints
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    Case 1: in portal vein
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    Case 2: in the IVC
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    Case 3: pulmonary thromboembolism
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    Case 4
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