Hungarian Radiology

[Decades in X-Ray Radiography György Luzsa MD]

LOMBAY Béla

APRIL 20, 2003

Hungarian Radiology - 2003;77(02)

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Hungarian Radiology

[Metal objects in the MR]

VÁRALLYAY György

[During magnetic resonance imaging the patient is exposed to three different types of electromagnetic radiation: static magnetic field, gradient or time varying magnetic fields and radiofrequency electromagnetic fields. The potential risks associated with performing MRI in patients with ferromagnetic implants, materials, or devices are related to the possibility of movement or dislodgement, to the induction of electrical currents and to the heating. The majority of metallic implants are considered to be safe for MRI, but patients with cardiac pacemakers, ferromagnetic aneurysm clips, cochlear implants, implantable drug infusion pumps should not be examined by MRI.]

Hungarian Radiology

[No Limits Optimism After ECR 2003]

LOMBAY Béla

Hungarian Radiology

[On the Privatization of University Radiology Clinics]

PALKÓ András

Hungarian Radiology

[The role of the mechanical lithotripsy for the treatment of ”difficult” common bile duct stones]

OROSZ Péter, NAGY György, SÜMEGI János, JUHÁSZ László

[INTRODUCTION - Present work aimed to identify some predictors of success or failure (gender, age, number and size of stones, presence of periampullary diverticula and jaundice) in mechanical lithotripsy. PATIENTS AND METHODS - 7998 endoscopic retrograde cholangio-pancreatographies, 2430 endoscopic sphincterotomies and 1205 bile duct stone extractions were performed between 1981 and 2000 years. In 159 patients - because of failure of standard techniques - mechanical lithotripsy was attempted for crushing of large bile duct stones. There were 39 men (mean age 70.5 years) and 120 women (mean age 67.7 years). 65 patients had single stone, 31 had 2 stones and 63 had multiple stones. 80 patients had larger stones than 20 mm in diameter. 23 patients had periampullary diverticula and 98 were jaundiced. Mechanical lithotripsy was accomplished with Olympus BML 2Q and BML 4Q intraendoscopic systems. When the first attempt failed, repeated treatment was performed or a Wilson-Cook extraendoscopic system was used. Data of predictors were processed using univariate analysis, Chi-square test and Fischer’s exact test. P<0.05 was regarded as statistically significant. RESULTS - Clearance of common bile duct was obtained in 130 patients (81.8%). Procedure related cholangitis occured in 16 patients. 8 pancreatitis developed, 7 of them subsided with conservative therapy, 1 of them required surgical treatment. On univariate analysis, the stone size was the only variable to differentiate the success from failure of procedure (p<0.05). Other variables had not any role in determining the outcome. CONCLUSION - Mechanical lithotripsy is a useful method with a high success rate and with an acceptable complication rate for treatment of ”difficult” bile duct stones. Stone size is the single outcome predictor.]

Hungarian Radiology

[Treatment of ureter stenosis of the transplanted kidney using invasive radiological methods]

DOROS Attila, WESZELITS Viola, PUHL Mária, RUSZ András, JANSEN Judit

[INTRODUCTION - Stenosis, occlusion and necrosis of the ureter after kidney transplantation occur in 2-13%. The therapeutic choices are surgery or minimally invasive endourological and percutaneous procedures. We analysed our therapeutic plan and results using percutaneous dilatation and stenting. PATIENTS AND METHODS - The patients after kidney transplantation are regularly examined by ultrasound. In cases of suspected obstruction we perform scintigraphy and CT-urography, and if indicated, we place percutaneous nephrostomy. Between July of 2000 and September of 2002, 15 stenosis in 14 patients were dilated and stented percutaneously. RESULTS - We found one restenosis after 6 months due to compression. This patient underwent surgery, but after the operation another stenosis has developed. We treated it percutaneously. One nephrectomy had to be performed due to serious infection. In one patient stent migration occured and surgical intervention was performed. 12 patients have free urine passage and good kidney function as a result of percutaneous therapy. CONCLUSION - We have good results with percutaneous ureter dilatation and stenting, but our follow-up time (31 months) must be longer for the evaluation of long-term results. The percutaneous treatment can partly replace endourological and surgical methods or can be combined with each other.]

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Neuroscience highlights: Main cell types underlying memory and spatial navigation

KRABOTH Zoltán, KÁLMÁN Bernadette

Interest in the hippocampal formation and its role in navigation and memory arose in the second part of the 20th century, at least in part due to the curious case of Henry G. Molaison, who underwent brain surgery for intractable epilepsy. The temporal association observed between the removal of his entorhinal cortex along with a significant part of hippocampus and the developing severe memory deficit inspired scientists to focus on these regions. The subsequent discovery of the so-called place cells in the hippocampus launched the description of many other functional cell types and neuronal networks throughout the Papez-circuit that has a key role in memory processes and spatial information coding (speed, head direction, border, grid, object-vector etc). Each of these cell types has its own unique characteristics, and together they form the so-called “Brain GPS”. The aim of this short survey is to highlight for practicing neurologists the types of cells and neuronal networks that represent the anatomical substrates and physiological correlates of pathological entities affecting the limbic system, especially in the temporal lobe. For that purpose, we survey early discoveries along with the most relevant neuroscience observations from the recent literature. By this brief survey, we highlight main cell types in the hippocampal formation, and describe their roles in spatial navigation and memory processes. In recent decades, an array of new and functionally unique neuron types has been recognized in the hippocampal formation, but likely more remain to be discovered. For a better understanding of the heterogeneous presentations of neurological disorders affecting this anatomical region, insights into the constantly evolving neuroscience behind may be helpful. The public health consequences of diseases that affect memory and spatial navigation are high, and grow as the population ages, prompting scientist to focus on further exploring this brain region.

Lege Artis Medicinae

[The atherosclerosis can not only be prevented, but also can be cured ]

MÁRK László

[The process of atherosclerosis nowadays plays an important role in the health care not just as a major cause of the most common cardiovascular diseases which lead to death, but also as a major factor in the loss of age-related elasticity in the blood vessels. Over the past two decades, large studies have shown that the treatment of high cholesterol levels can reduce the frequency of cardiovascular events and death and have confirmed the ability to reduce the already existing atherosclerotic plaque, which is almost unique in pharmacotherapy. Using lipid lowering therapy, if we do it properly, we can not only prevent vascular events, but can also cure atherosclerosis. Currently there are three drug groups (statins, ezetimibe and PCSK9- inhibitors), which have complete evidence that their use can reduce the number of cardiovascular events and plaque regression can be achieved. Despite many convincing clinical trials, lipid-lowering therapy is on the cardiovascular prevention palette in the just tolerated or forced applied category. In order to take advantage of its potentials at an appropriate level, as doctors, we have to approach to it by considering its importance. We should communicate to our patients that it’s about a life-long treatment, which not only can reduce the possibility of cardiovascular events, but also can slow down the aging process of the arteries. ]

Hungarian Radiology

[Solitary fibrous tumor of the chest]

AGÓCS Ágnes, KISHINDI Kiss Katalin, PENCS Mónika, TÓTH Tivadar

[INTRODUCTION - Solitary fibrous tumor is a rare, in most of the cases benign tumor of mesenchymal origin arising from the pleura. CASE REPORT - Significantly raised right hemidiaphragm was noted on the chest X-ray of an elderly female patient with good general condition. A large solid mass lesion was seen above the normally positioned right hemidiaphragm on ultrasound and chest CT examinations. The mass was removed by surgical resection and a solitary fibrous tumor was confirmed by histological and immunhistochemical examinations. CONCLUSION - Solitary fibrosus tumor is a rare and histologically benign tumor. Occasionally it may enlarge rapidly and transform into malignant variant after several years. Therefore complete surgical resection and long term follow up is needed in all cases.]

Hungarian Radiology

[Role of ultrasound in the diagnosis of Crohn’s disease]

KUKLA Edit, BEVÍZ József, MAKULA Éva, PALKÓ András, VÁRKONYI Ágnes, FÜZESI Kristóf

[INTRODUCTION - The peak incidence of Crohn’s disease is the second and third decades of life. Twenty-five percent of new cases occur in individuals less than 20 years of age. Typically the clinical presentation of Crohn’s disease is not different in children from in adults. The sudden onset of the disease with serious symptoms is not rare in pediatric patients The signs of acute abdomen, the rapid deterioration of the patient's physical condition needs urgent surgical intervention. Ultrasound is the first imaging method of choice can reveal specific signs of the disease and early accurate diagnosis can be established. The radiation burden can be decreased on this way and the unnecessary surgical intervention can be avoided. CASE REPORT - A child who presented typical signs of acute appendicitis was investigated first by ultrasound. Based on this investigation the diagnosis of Crohn’s disease was suspected, but unfortunately the adequate diagnosis was established only 5 months later after appendectomy and right sided hemicolectomy. CONCLUSION - Authors draw the attention to the importance of the ultrasound investigation in the diagnosis of Crohn’s disease in the childhood.]

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[Alzheimer’s disease and arrhythmia: cause, effect, complication]

PETŐ Balázs, KOVÁCS Tibor

[Alzheimer’s disease (AD) is a new endemic of the 21st century which becomes the biggest health and social problem of the ageing societies in the next few decades. Vascular factors, such as cardiac arrhythmias, especially atrial fibrillation, play an important role in the pathogenesis of AD. Arrhythmias might develop as a consequence of AD, too, and they might be caused by the cholinergic medications used in the treatment of AD. In addition, AD has a major influence on the treatment of arrhythmias, especially atrial fibrillation. Because of these, AD and arrhythmias might accompany each other in the practice of several medical specialties; these interactions are reviewed in this paper. ]