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ESTUDIOS


01 octubre 2014

RADIOLOGY. Treatment of Metastatic Posterior Vertebral Body Osseous Tumors by Using a Targeted Bipolar Radiofrequency Ablation Device: Technical Note

Travis J. Hillen, MD Praveen Anchala, MD Michael V. Friedman, MD Jack W. Jennings, MD, PhD

Bone metastases are a major cause of morbidity in patients with cancer and represent a common occurrence in these patients. The vertebral column is the most common site for bone metastases, with an incidence of 30%–70% in patients with metastatic cancer. The current standard of care for management of painful bone metastasis is external-beam radiation. Commonly, external-beam radiation achieves at least partial relief of pain but, often, there is delay in the relief of symptoms, and the relief is usually transient. Additionally, painful osseous metastatic disease is often refractory to chemotherapy or hormonal therapy. Surgical intervention is of limited value in patients with spinal metastatic disease, owing to its morbidity and the often short life span of the patients. Surgical indications include a fracture that results in neurologic compromise or high risk of developing pathologic fracture, which would lead to neurologic compromise. Most of these cases are ultimately managed with analgesics, including nonsteroidal anti-inflammatory drugs and opioids titrated to achieve pain relief while trying to minimize side effects of the drugs.

01 octubre 2014

RADIOLOGY. Arterial Endofibrosis in Endurance Athletes: Angiographic Features and Classification

Olivier Rouvière, MD, PhD Patrick Feugier, MD, PhD John Palma Gutiérrez, MD Jean-Michel Chevalier, MD

Arterial endofibrosis affects highly-trained endurance athletes, mostly cyclists or long-distance runners. It usually occurs in the first centimeters of the external iliac artery (EIA); however, the common iliac artery (CIA) and/or the deep femoral artery can also be affected. It is characterized by arterial stenoses from focal intimal thickening made of loose connective tissue, and it causes claudication during maximal effort and reduced athletic performance.

01 octubre 2015

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY. Long-Term Clinical Outcomes of Infrapopliteal Drug-Eluting Stent Placement for Critical Limb Ischemia in Diabetic Patients

Stavros Spiliopoulos, MD, PhD, EBIR, Vasiliki Theodosiadou, MD, Konstantinos Katsanos, MD, MSc, PhD, Panagiotis Kitrou, MD, PhD, George C. Kagadis, BSc, MSc, PhD, Dimitris Siablis, MD, PhD, EBIR, Dimitris Karnabatidis, MD, PhD, EBIR

Purpose: To evaluate long-term clinical outcomes of infrapopliteal drug-eluting stent (DES) placement in insulin-dependent and non–insulin-dependent diabetic patients with critical limb ischemia (CLI).

01 octubre 2015

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY. Root Cause Analysis of Rebleeding Events following Transjugular Intrahepatic Portosystemic Shunt Creation for Variceal Hemorrhage

Janesh Lakhoo, BS, James T. Bui, MD, Sean P. Zivin, MD, R. Peter Lokken, MD, MPH, Jeet Minocha, MD, Charles E. Ray Jr, MD, PhD, Ron C. Gaba, MD

Purpose: To identify fundamental causes underlying recurrent variceal hemorrhage (VH) after transjugular intrahepatic portosystemic shunt (TIPS) to ascertain opportunities for improvement of TIPS-based management of VH and prevention of rebleeding.

01 octubre 2015

JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY. Minimally Invasive Percutaneous Treatment of Small Renal Tumors with Irreversible Electroporation: A Single-Center Experience

Clayton K. Trimmer, DO, Ankaj Khosla, MD, Monica Morgan, MD, Summer L. Stephenson, PA-C, Asim Ozayar, MD, Jeffrey A. Cadeddu, MD

Purpose: To evaluate whether irreversible electroporation (IRE) can be used as an ablation technique for small renal tumors (T1a cancers or small benign tumors) and to describe features after ablation on computed tomography (CT) or magnetic resonance (MR) imaging.

01 octubre 2014

AMERICAN JOURNAL OF ROENTGENOLOGY. A Case-Based Approach to Common Embolization Agents Used in Vascular Interventional Radiology

Avinash Medsinge, Albert Zajko, Philip Orons, Nikhil Amesur and Ernesto Santos

OBJECTIVE. The objective of this article is to familiarize the reader with the most commonly used embolic agents in interventional radiology and discuss an approach for selecting among the different embolic agents. This article reviews their properties and uses a case-based approach to explain how to select one.

01 octubre 2014

AMERICAN JOURNAL OF ROENTGENOLOGY. Percutaneous Strategies for the Management of Pulmonary Parenchymal, Chest Wall, and Pleural Metastases

Quazi Z. Al-Tariq

OBJECTIVE. The purposes of this article are to review the indications for and technical aspects of various percutaneous strategies available for the treatment of intrathoracic metastases involving the parenchyma, pleura, and chest wall and to describe the relative merits of one of these strategies over another to determine the best approach to use.

01 octubre 2014

AMERICAN JOURNAL OF ROENTGENOLOGY. Interventional Radiology in the Diagnosis and Treatment of Diseases of the Breast: A Historical Review and Future Perspective Based on Currently Available Techniques

Kenneth R. Tomkovich

OBJECTIVE. The topic of imaging-guided breast interventions spans more than 30 years. Radiologists pioneered procedures such as needle or wire localization and ultrasoundand stereotactic-guided biopsy. Using recently developed devices and technology, the opportunity exists to treat lesions of the breast with minimally invasive imaging-guided techniques.

28 septiembre 2015

WORLD JOURNAL OF RADIOLOGY. Imaging evaluation of traumatic thoracolumbar spine injuries: Radiological review

Shivanand Gamanagatti, Deepak Rathinam, Krithika Rangarajan, Atin Kumar, Kamran Farooque and Vijay Sharma

Spine fractures account for a large portion of musculoskeletal injuries worldwide. A classification of spine fractures is necessary in order to develop a common language for treatment indications and outcomes. Several classification systems have been developed based on injury anatomy or mechanisms of action, but they have demonstrated poor reliability, have yielded little prognostic information, and have not been widely used.

28 septiembre 2015

WORLD JOURNAL OF RADIOLOGY. Role of computed tomography angiography in detection and staging of small bowel carcinoid tumors

David Bonekamp, Siva P Raman, Karen M Horton and Elliot K Fishman.

Small-bowel carcinoid tumors are the most common form (42%) of gastrointestinal carcinoids, which by themselves comprise 70% of neuroendocrine tumors. Although primary small bowel neoplasms are overall rare (3%-6% of all gastrointestinal neoplasms), carcinoids still represent the second most common (20%-30%) primary small-bowel malignancy after small bowel adenocarcinoma. Their imaging evaluation is often challenging. State-of-the-art high-resolution multiphasic computed tomography together with advanced postprocessing methods provides an excellent tool for their depiction. The manifold interactive parameter choices however require knowledge of when to use which technique.

18 septiembre 2015

WORLD JOURNAL OF HEPATOLOGY. Progress in the treatment of pulmonary metastases after liver transplantation for hepatocellular carcinoma

Zhan-Wang Xiang, Lin Sun, Guo-Hong Li, Rakesh Maharjan, Jin-Hua Huang and Chuan-Xing Li.

Hepatocellular carcinoma (HCC) is the fifth most common cancer in the world, and is the third leading cause of cancer-related death. Liver transplantation (LT) has become a curative treatment for patients with HCC. However, recurrence and metastasis after LT are the main factors reducing long-term survival in patients, and the lung is the most common site of metastasis after LT for HCC, although metastasis to liver, para-aortic lymph nodes and renal periphery are observed. Thus, the treatment of pulmonary metastases after LT for HCC has become a hot research topic, the successful treatment of pulmonary metastases can significantly prolong the survival of LT patients. Although single conventional treatment (chemotherapy, surgery and external beam radiation therapy), immunosuppression, image-guided minimally invasive therapy (radiofrequency ablation, microwave ablation, cryoablation, and brachytherapy) and molecular targeted drugs have had a significant effect, patients do not have durable remission and the long-term survival rate is disappointing.

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