Teja K, Gibson R S, Nolan S P
Clin Cardiol. 1987 Sep;10(9):546-8. doi: 10.1002/clc.4960100918.
Liquefaction necrosis of mitral annular calcification occurs in 3% of autopsied cases. The liquified material can spread intramurally in various directions creating suspicious appearing mass lesions on chest x-ray or echocardiography. An incidential finding of an echogenic left atrial calcified mass in a 57-year-old woman was suspected to be an intracardiac tumor for which she underwent exploratory cardiotomy. Instead, culture-negative liquified pasty material was removed from the posterior left atrial wall adjacent to the calcified mitral annulus. This case illustrates that liquefaction necrosis of mitral annular calcification may spread to contiguous structures and masquerade as an intracardiac tumor. This relatively unknown aspect of mitral annular calcification should be considered in the differential diagnosis of echogenic left atrial mass lesions.
二尖瓣环钙化的液化性坏死在3%的尸检病例中出现。液化物质可在心肌内沿各个方向扩散，在胸部X线或超声心动图上形成可疑的肿块病变。一名57岁女性经超声检查偶然发现左心房有一强回声钙化肿块，怀疑是心内肿瘤，因此接受了开胸探查术。结果，从与钙化二尖瓣环相邻的左心房后壁取出了培养阴性的液化糊状物质。该病例表明，二尖瓣环钙化的液化性坏死可能扩散至相邻结构，并伪装成心内肿瘤。在鉴别诊断左心房强回声肿块病变时，应考虑二尖瓣环钙化这一相对不为人知的方面。
