MORI, Luigi; BONVECCHIO, Emilio; SECCO, Gianmarco; SILVESTRI, Ivan; MARINO, Giovanni; VAILATI, Davide. The “Donut Sign”: when a thrombus envelops the fibrin sheath. Medicine and Science Journal, [S. l.], v. 2, 2024. DOI: 10.53150/2024.v2.56. Disponível em: https://emsj.net/index.php/msj/article/view/56. Acesso em: 26 oct. 2025.