04 July 2022>: Articles
Acute Mitral Regurgitation Due to Chordae Tendineae Rupture: A Rare Presentation of Cardiac Amyloidosis
Unusual clinical course, Challenging differential diagnosis, Rare disease
Regina Aguilar-López A , Cristopher Cándido Sánchez-Rodríguez A , Daniel Manzur-Sandoval A , María Flores Calvo A , Alberto Aranda-Fraustro A , Antonio Jordán-Ríos A , Alejandro Francisco-Cruz A , Gustavo Rojas-Velasco A*DOI: 10.12659/AJCR.936545
Am J Case Rep 2022; 23:e936545
Figure 6. Native mitral valve showing Congo red positive deposits. (A) Subendocardial and spongiosa stroma with mild thickening (black arrowhead) (hematoxylin and eosin ×250). (B, C) Laminar and linear positive staining pattern in the subendothelial stroma (black arrowheads) (Congo red and crystal violet, ×100 and ×250]. (D) Granular calcium pattern in the cytoplasm of endothelial and stromal cells (black arrowhead) (Von Kossa; ×100 and ×250).