We present a sudden-death case secondary to a right atrial rupture, oc
curing as a result of a myocardial infarction with very subtle clinica
l and electrocardiographical signs. This atrial infarction case illust
rates the difficulty of diagnosis and also the serious consequences th
at can result from this medical condition. We review other potential c
omplications which, in clinical practise, are not always attributed to
their true origin.