Sophie Chagnon

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We report two cases of large spontaneous psoas haematoma in patients on anticoagulant therapy. Active bleeding was well demonstrated on spiral CT. Transcatheter arterial embolization was used successfully to stop bleeding. The diagnostic strategy, the relevance of spiral computed tomography and our therapeutic approach to this complication are discussed.
AIM To assess medical emergency radiology referral practice compared with a set of French guidelines and to measure the efficiency of computer-based guidelines on unnecessary medical imaging. MATERIALS AND METHODS All radiological requests were computerized in the medical emergency departments of two French teaching hospitals. During control periods,(More)
PURPOSE Most patients with colorectal liver metastases (LMs) receive systemic chemotherapy. This study aimed to determine the significance of a complete response on imaging of LMs after chemotherapy. PATIENTS AND METHODS Between 1998 and 2004, 586 patients were treated for colorectal LMs in one institution. Of these, 38 with the following criteria were(More)
Two cases are reported of congenital intrahepatic portacaval shunts in middle-aged women who had encephalopathy or hypoglycemia. Real-time ultrasound (US) investigations revealed vascular communication between the left portal and hepatic veins in one patient and communication between the right portal and hepatic veins in the other. These findings were(More)
Fine-needle aspiration biopsy (FNAB) of thyroid nodules has been proposed as a preoperative screening method to reduce the number of patients with benign nodules referred for surgery. Only a few previously published studies have compared cytologic results with a systematic surgical control; furthermore, the role of ultrasound guidance for FNAB in obtaining(More)
OBJECTIVES The objectives of this study are to describe the standardization and dissemination of dynamic contrast-enhanced ultrasound (DCE-US) for the evaluation of antiangiogenic treatments in solid tumors across 19 oncology centers in France and to define a quality score to account for the variability of the evaluation criteria used to collect DCE-US(More)
A 34 year old patient presented with recurrent hemoptysis. A chest radiograph was normal. Helical CT angiogram of the chest with tridimensional reconstructions demonstrated an intralobar pulmonary vascular sequestration Pryce I-type of the right lower lobe. The angiography confirmed the diagnosis showing a large feeding artery arising from the coeliac(More)
Hereditary hemorrhagic telangiectasia (HHT) or Rendu-Osler-Weber disease is an autosomic dominant disorder, which is characterized by the development of multiple arteriovenous malformations in either the skin, mucous membranes, and/or visceral organs. Pulmonary arteriovenous malformations (PAVMs) may either rupture, and lead to life-threatening(More)
Embolization has become a first-line treatment for symptomatic uterine fibroid tumors. Selective catheterization and embolization of both uterine arteries, which are the predominant source of blood flow to fibroid tumors in most cases, is the cornerstone of treatment. Although embolization for treatment of uterine fibroid tumors is widely accepted, great(More)
OBJECTIVE Our purpose is to report our clinical experience with patients who underwent endovascular treatment with Wallstents for subacute or chronic benign obstruction of the superior vena cava (SVC). SUBJECTS AND METHODS Twelve patients who were an average of 54 +/- 12 years old were referred for treatment of severe SVC syndrome related to implanted(More)