We present two patients with atypical mitral annular calcification. In
both instances, the annular calcification. presented as a mass locali
zed to the atrioventricular junction. In one instance, there was a mob
ile element of the mass which resulted in an, embolic stroke. In, conc
lusion atypical mitral annular calcification. can mimic an intracardia
c mass. It is usually recognized by its typical location and echocardi
ographic characteristics.