We describe a 27y old female systemic lupus erythematosus (SLE) patien
t with salmonella bacteraemia who presented with fever, back pain and
an enlarging heart size. A two dimensional echocardiogram (2D Echo) sh
owed a mass in the right atrium. Subsequent computer tomographic (CT)
and magnetic resonance imaging (MRI) studies showed that this had beco
me a ring shaped lesion at the posterior end of the interventricular s
eptum with an area communicating with the right atrial cavity. At oper
ation a ruptured mycotic aneurysm of the right coronary artery was fou
nd. This is the first report of an SLE patient with a coronary artery
mycotic aneurysm due to salmonella and the first reported case of surv
ival following rupture of such an aneurysm.