[The nutcracker syndrome].

The nutcracker syndrome refers to compression of the left renal vein between the aorta and the superior mesenteric artery. After a review of the literature, the authors emphasize the uncommon incidence of this pathology, and the interest of imaging in the survey of this affection.

[Posterior-reversible encephalopathy in hemodialysis].

Posterior-reversible encephalopathy syndrome (PRES) is a recently clinicoradiologic entity caused by numerous medical conditions and characterized by acute-neurologic disorders, such as headaches, confusion, seizures associated with arterial hypertension. MRI characteristics are typical. The rapid diagnosis is of capital importance due to a potential reversibility.

[Voluminous mediastinal neurofibroma in a child].

Introduction: Neurogenic tumors account for 30% of mediastinal tumors in children. The thoracic region is the most common site for neurofibromas. We report a case of a voluminous neurofibroma in a small girl.