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FOOD FOR THOUGHT: MITRAL STENOSIS WITH A SIDE OF MAC AND CHEESE

G Behari1, F Jenssen1, A Price1

  • 1Department of Internal Medicine, Leonard J Chabert Medical Center, Houma, Louisiana.

The Journal of the Louisiana State Medical Society : Official Organ of the Louisiana State Medical Society
|May 10, 2016
PubMed

Insights

Caseous mitral annular calcification (CMAC) is a rare condition, often mistaken for other heart masses. Early diagnosis of this mitral annular calcification variant is crucial for proper patient management.

Area of Science:

  • Cardiology
  • Radiology
  • Pathology

Background:

  • Caseous mitral annular calcification (CMAC) is a rare variant of mitral annular calcification (MAC).
  • CMAC predominantly affects elderly women, typically on the posterior mitral annulus.
  • It is often diagnosed incidentally and usually follows a benign clinical course.

Purpose of the Study:

  • To highlight the characteristics of CMAC.
  • To emphasize its potential for misdiagnosis as other intracardiac masses.
  • To underscore the importance of accurate diagnosis and differentiation.

Main Methods:

  • Review of existing literature on CMAC and MAC.
  • Analysis of diagnostic challenges and differential diagnoses.
  • Comparison of prevalence rates between MAC and CMAC.

Main Results:

  • CMAC is a rare condition, occurring in 0.06% of the population compared to 10% for MAC.
  • CMAC can lead to abnormal blood flow, mitral regurgitation, and rarely, functional mitral stenosis.
  • A significant number of CMAC cases are misdiagnosed as tumors, abscesses, thrombi, or vegetation.

Conclusions:

  • Accurate differentiation of CMAC from other intracardiac masses is essential.
  • Increased awareness can improve diagnostic accuracy and prevent unnecessary interventions.
  • Further research may elucidate optimal diagnostic and management strategies for CMAC.

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