[Abnormality of hepatic perfusion secondary to superior vena cava obstruction: three case reports]. / Troubles de la perfusion hépatique secondaires à une thrombose cave supérieure: à propos de trois cas.

The aim of this study was to evaluate the altered flow dynamics of liver perfusion that can be observed during superior vena cava obstruction. Through the description of three case reports of patients with SVC obstruction, the authors discuss the different collateral pathways used that result in systemic portal venous shunting creating this altered flow dynamics and their appearance in computed tomography.

[Meningioma of the jugular foramen with a large cervical extension]. / Meningiome du foramen jugulaire à large extension cervicale.

Meningioma rarely gives an extra cranial extension. The authors report a case of meningioma of the jugular foramen reaching the left side of the neck. Epidemiological and clinical aspects of meningiomas of the neck are presented. The pathogenesis of this ectopic meningioma is discussed. We stress the contribution of imaging to evoke the diagnosis, determine the exact extent of the tumor, guide biopsies and allow post-therapeutic surveillance. Histological diagnosis of meningiomas of the neck is difficult since it can mimic more commonly encountered neck tumours. Difficulties of surgical techniques used to manage the tumor are also reported.