1,721,132 research outputs found
Imaging Findings in Renal Tuberculosis on Computed Tomography Urography.
No full textGenito-urinary tuberculosis is the most common manifestation of extrapulmonary tuberculosis. Classic findings of renal tuberculosis on computed tomography (CT) urography include calcifications, deformation of calyces, obstructive hydronephrosis or hydrocalyx, and medullary and papillary necrosis. The different macroscopic patterns of renal tuberculosis on CT urography include: the open form, with extension of the caseified necrosis to the intra-renal excretory tract; the closed form, with extension of necrosis toward the renal parenchyma with progressive tissue scarring; and putty kidney
The role of kidney biopsy in the diagnosis of renal disease and renal masses
No full textRenal biopsy has become a fundamental diagnostic tool both in nephrology, for the diagnostic assessment of many renal diseases, and in oncology, for the characterization of renal masses.
A number of different nephrologic diseases can show a similar clinical and laboratory pattern but the histopathological features are different. Biopsy is required as different histological entities are associated with different therapeutic protocols and with different prognoses when considering the renal function. Biopsy of renal masses are becoming more frequent, as this procedure is required in candidates to non surgical treatments, i.e., radiofrequency ablation, and in patients for whom partial nephrectomy may be preferred. The correct patients selection and preparation, the use of modern bioptic devices, the possibility of a real time monitoring of the procedure by means of ultrasound, significantly decreased both patient discomfort and the complication rate of this invasive procedure. Until few years ago renal biopsy was performed in few selected centers, while now it is more widespread but nevertheless it requires a multidisciplinary team where the nephrologist, the radiologist and the pathologist are involved. All these physicians are essential part of the team and are required for the procedure and for the correct diagnostic interpretation
Pain Imaging: A Clinical-Radiological Approach to Pain Diagnosis
No full textThis book addresses all pain imaging aspects related to both the central nervous system and the body (thorax, abdomen and pelvis), thus updating the international literature on the topic. By adopting a clinical-radiological approach and offering a comprehensive differential diagnosis for a number of painful syndromes (many of which can mimic one other), the work aims to support and enhance the diagnostic management of these patients, suggesting the most appropriate diagnostic algorithm. The book is divided into separate sections for each anatomical macro-area, and the chapters cover the respective topics from both clinical and radiological perspectives. Further, the book includes extensive electronic supplementary material. As such, it offers an invaluable tool for radiologists, neuroradiologists and clinicians working in internal medicine, surgery and neurology, and could also be used in residency programs for these groups
Simplified urographic technique using non-ionic contrast media].
No full textUrography is not to be performed following a standard procedure. However, some key-films can be defined which are to be routinely employed. If needed, additional radiographs can be performed. We tried to optimize the urographic technique combining low X-ray exposure and adequate diagnostic assessment with the injection of 17.5 gI of a non-ionic agent. Two groups of 50 patients each were investigated. In the former, the technique we currently employ in our Institute was used: plain film, 2 nephrotomograms (1'), full-length view (7'), kidney view with ureteral compression (15'), and full-length or bladder view (20'). In the latter group, a more simplified technique was used: plain film, 2 nephrotomograms (1'), kidney view (7'), and full-length view (15'). A compression device was positioned immediately before contrast medium injection and released immediately before the 15-minute exposure. Both urographic techniques allowed high scores to be reached (after the Kelsey Fry method), with no significant differences among the evaluated parameters. Thus, the technique employed on the second group is to be preferred, because it shortens examination time and reduces X-ray exposure. However, a simplified technique increases the radiologist's responsibility: it is thus essential for an experienced uroradiologist to accurately supervise the procedure and immediately decide what to do next
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