# Prosthetic valve obstruction: the ‘frozen leaflet sign’ on routine chest radiography

**Authors:** Jiao Bai, Xiaojun Xie

PMC · DOI: 10.1093/ehjcr/ytag126 · European Heart Journal. Case Reports · 2026-02-23

## Full-text entities

- **Diseases:** pulmonary venous congestion (MESH:D006940), rheumatic heart disease (MESH:D012214), heart failure (MESH:D006333), tricuspid regurgitation (MESH:D014262), pulmonary hypertension (MESH:D006976), mitral valve obstruction (MESH:D008944), obstruction (MESH:D000402), hypotension (MESH:D007022), thrombosis (MESH:D013927), abnormalities (MESH:D000014), prosthetic valve obstruction (MESH:D006349)
- **Species:** Homo sapiens (human, species) [taxon 9606]

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Source: https://tomesphere.com/paper/PMC12952202