Which statement about caseous annular calcification is true?

Which statement about caseous annular calcification is true?

• A. It is common variant of annular calcification
• B. It forms a mass on the annulus composed of caseous material
• C. It never causes LVOTO
• D. It is unrelated to calcium metabolism

Answer: (B)

Caseous annular calcification is a rare form of mitral annulus calcification that presents as a mass-like lesion at the posterior mitral annulus. The defining feature is a mass formed by caseous material encased in a calcified shell, which is why the statement describing it as forming a mass on the annulus composed of caseous material is correct. This entity is a calcific process, so it is inherently related to calcium metabolism. It is not a common variant of annular calcification, and while LVOT obstruction is not a typical outcome, there are rare reports of obstruction due to the mass, so the claim that it never causes LVOTO isn’t strictly true.

Caseous annular calcification is a rare form of mitral annulus calcification that presents as a mass-like lesion at the posterior mitral annulus. The defining feature is a mass formed by caseous material encased in a calcified shell, which is why the statement describing it as forming a mass on the annulus composed of caseous material is correct. This entity is a calcific process, so it is inherently related to calcium metabolism. It is not a common variant of annular calcification, and while LVOT obstruction is not a typical outcome, there are rare reports of obstruction due to the mass, so the claim that it never causes LVOTO isn’t strictly true.