Deer horn sign

Last revised by Karen Machang'a on 20 Aug 2024

The deer horn sign is a reliable sign and an important diagnostic clue of passive congestive hepatopathy due to heart failure on ultrasonography 1. In the deer horn sign, the head is formed by a dilated inferior cava, and the engorged hepatic veins resemble horns. It has also been described as the bunny sign, which was first described by Bartrum and Crow 2,3.

Cases and figures

  • Case 1
  • Figure 1
  • Case 2
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