[Low dose cardiac computed tomography: how to obtain it?].

Since the introduction of Multi-slice computed tomography (CT), cardiac CT has been the increasingly used as a noninvasive modality for the diagnosis of coronary disease. Despite its potential benefits and promising clinical results, it has suffered from high doses of radiation associated with a risk of radiation-induced cancers. This has raised serious concerns in clinical practice.

[Listeria monocytogenes liver abscess. In a diabetic patient].

Most liver abscesses are caused by Enterobacteriaceae, sometimes associated with anaerobes. Listeriosis is an exceptional cause of liver abscess, usually in a context of disseminated infections. We report the case of a diabetic woman who had liver abscess due to Listeria monocytogenes.

[The ductus bump. Transient dilatation of the ductus arteriosus (author's transl)].

Transient, physiologic and rare, dilatation of the ductus arteriosus in asymptomatic neonates, shown by left superior mediastinal mass. It appears only on the PA chest roentgenogram, with vascular characteristics. It disappears after three or four days of regular checking and the diagnosis is thus confirmed, cutting out any other mediastinal pathology.