Classification, surgical management and outcomes of patients with gastrogastric fistula after Roux-En-Y gastric bypass.

Background: Gastrogastric fistula (GGF) is a known complication after Roux-en-Y gastric bypass that can lead to marginal ulceration (MU) and failure of weight loss.

Objectives: To describe our experience with GGF management and propose a classification of GGF based on its anatomic location.

Setting: University hospital, France.

Effect of contrast dilution on contrast-enhanced MR angiography of the aorta and renal arteries.

The aim of this study was to investigate the effect of gadolinium chelate dilution on vascular enhancement in contrast-enhanced two-dimensional (2D) MR subtraction angiography of aorta and renal arteries. Twenty patients were prospectively included. 2D subtraction MR angiography consisted of successive multisection breathhold GRE acquisitions of 16 s (2D FLASH, TR/TE 72/4, flip angle 60 degrees) obtained in the coronal plane before and after intravenous bolus administration of 0.