1,721,004 research outputs found
Sonographic patterns of renal lymphoma in B-mode imaging and in contrast-enhanced ultrasound (CEUS)-A retrospective evaluation
No full textIntroduction: Retrospective analysis of sonographic patterns of renal lymphoma in B-mode imaging and contrast-enhanced ultrasound (CEUS). Patients/methods: From January 2000 to June 2014, 27 patients with clinical or histologically confirmed renal lymphoma were examined with B-mode imaging, followed by CEUS in 8 cases. Results: In B-mode imaging renal lymphoma were hypoechoic in all 27 cases (100%). 9 patients (33.3%) had a bilateral, 18(66.7%) patients had an unilateral lymphoma infiltration of the kidneys. 8(29.6%) cases of small nodular, 5 (18.5%) cases of large nodular and 6(22.2%) cases of perirenal lymphoma infiltration of the kidney were observed in B-mode imaging. Bulky-formation of renal lymphoma was detected in 6(22.2%) patients and 2(7.4%) patients had a diffuse lymphoma infiltration of the kidneys. In CEUS an arterial isoechoic enhancement was observed in 5(62.5%)- and, an arterial hypoechoic enhancement was observed in 3(37.5%) cases of renal lymphoma. A hypoechoic enhancement in the parenchymal phase was observed in 8(100%) cases of renal lymphoma infiltration. Conclusion: In B-mode-imaging, nodular lymphoma infiltration of the kidneys is the most common of all renal lymphoma patterns in B-mode imaging. In CEUS, renal lymphoma presented an arterial iso- or hypoechoic enhancement, followed by a hypoechoic enhancement in the parenchymal phase. In regard to the differentiation of renal lymphoma to benign lesions of the kidney, CEUS may be helpful. However, the differentiation of renal lymphoma from other malignant lesions of the kidney like renal cell carcinoma is not feasible by CEUS. (C) 2015 Elsevier Ireland Ltd. All rights reserved.Max-Eder- Nachwuchsgruppe der Deutschen Krebshilf
Abdominal ultrasound. What is important for the emergency department?
No full textFocused emergency ultrasound (EU) is an established diagnostic procedure in the prehospital setting, emergency rooms, and critical care units. EU can be performed quickly, the focused application is easy to learn, it can be performed at the bedside, and it represents a cost-efficient tool without radiation exposure. Research and analysis of current literatue. Training in focused EU is necessary. In addition to echocardiography and thoracic ultrasound, abdominal ultrasound is widely used in the emergency setting. The following key leading symptoms should prompt physicians to perform a sonographic evaluation: (1) jaundice, (2) pain in the right upper abdomen (gall stones), (3) the "big belly" (ascites), (4) "acute abdomen" (acute abdominal pain), (5) flank pain (acute renal failure, anuria), and (6) the swollen leg (deep vein thrombosis). Key diseases can be diagnosed using basic ultrasound. Other differential diagnoses often require advanced ultrasound skills
Incidental findings in abdominal ultrasound. Characteristics and clinical interpretation
No full textAbdominal ultrasound is a common diagnostic procedure in internal medicine. The correct interpretation of incidental findings can be difficult at times and often results in expensive and sometimes invasive follow-up examinations. Therefore, detailed knowledge of incidental findings on abdominal ultrasound is of utmost clinical and economical importance. Incidental findings are often benign, however, an accurate evaluation and correct diagnosis is crucial for the subsequent clinical management. To this end B-mode ultrasonography is complemented by color flow Doppler sonography and contrast-enhanced ultrasonography to add dynamic information on blood flow and vessel formation. This article presents frequent incidental findings of the major abdominal organs and vessels, and describes the sonographic and clinical management to find the correct diagnosis
DIAGNOSTIC OF HELICOBACTER PYLORI VIA ENDOSCOPY: THE CLINICAL ISSUE OF SUPPRESSIVE CONDITIONS
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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