Marañón's sign.

@article{Schafranski2011MaransS,
  title={Mara{\~n}{\'o}n's sign.},
  author={Marcelo Derbli Schafranski and Patr{\'i}cia Rechetello Cavalheiro and Rebecca Saray Marchesini Stival},
  journal={Internal medicine},
  year={2011},
  volume={50 15},
  pages={1619}
}