PMC8403017_01
Cardiac fluoroscopy recorded in 1981: a dense C-shaped calcification about the posterior mitral annulus is noted. (Reproduced with permission of Nankoh-Doh, Tokyo, Japan.)
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Preoperative cardiac catheterization demonstrated a severe degree of mitral valve regurgitation due to valve prolapse with C-shaped MAC ( Fig. 1 ).  She had no history of previous inflammatory process.
Eighteen years after the first mitral valve operation, fluoroscopy (
A
) and CT scan (
B
) images were obtained for preoperative evaluations of aortic root replacement. The scattered calcification areas that remain unchanged are seen in the left atrium. CT, computed tomography.
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Preoperative evaluation for aortic root replacement showed no progression of calcification in the mitral valve apparatus including the left atrium ( Fig. 2 ).
Neither progression nor expansion of calcification is seen in the fluoroscopy (
A
) and CT scan (
B
) images obtained 38 years after the first surgical operation. CT, computed tomography.
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Further reexaminations were conducted on MAC by CT and fluoroscopic analyses, and neither extension nor development of calcification was found in the mitral annulus ( Fig. 3 ).