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Background To evaluate the efficacy of antegrade insertion of the ureteric stent using pull-through technique in tight ureteric stricture that a guide-wire traversed, but a 5-F catheter could not.
Byung Moon Kim2 Email:bmoon21@hanmail.net%0A Sung Il Park1 Email:astarte@empal.com
[1] Department of Diagnostic Radiology, Kwandong University Myongji Hospital, Koyang-si, Republic of Korea ;[2] Department of Diagnostic Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul, Republic of Korea
2008,33,000,1,2
Objective-To evaluate the analytical agreement between blood lactate concentrations determined by use of an enzymatic-amperometric bedside system in capillary blood samples from the pinna and in jugular venous blood samples from dogs. Animals-53 dogs. Procedures-For each dog, venous and capillary blood samples were obtained from a jugular vein and from the ear pinna (by use of a lancing device), respectively, following a randomized sequence of collection. Lactate concentrations in both types of samples were analyzed by use of an enzymatic-amperometric bedside system intended for lactate detection in capillary blood samples from humans that was previously validated in dogs. The Passing-Bablock regression analysis was used to compare venous and capillary blood lactate concentrations; the level of agreement was calculated by use of the Bland-Altman method. Results-Jugular venous blood samples were collected without difficulty from all 53 dogs. A capillary blood sample was obtained from only 47 dogs. The correlation coefficient between lactate concentrations measured in venous and capillary blood samples was 0.58 (slope, 2.0 [95% confidence interval, 1.5 to 3.0]; intercept, -1.2 [95% confidence interval, -3.1 to 0.4]). The mean difference between methods was 0.72 mmol/L (95% confidence interval, 0.38 to 1.06) with limits of agreement of -1.55 to 2.99 mmol/L. Conclusions and Clinical Relevance-Because of the lack of agreement between lactate concentrations determined in capillary and jugular venous blood samples, measurement of capillary blood lactate concentration in dogs performed with the technique used in the study does not appear to be a reliable alternative to jugular venous blood measurements.
Ferasin L Nguyenba TP
Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108.
Endogenous Cushing’s syndrome is a relatively rare disease. Most cases being ACTH-dependent, ACTH-independent Cushing’s syndrome (AICS) is an even rarer condition [15%–20%]. In more than 95% cases the cause of AICS is unilateral adrenal enlargement caused by adenoma or carcinoma. Bilateral adrenal disease is caused by primary pigmented nodular adrenal dysplasia (PPNAD); ACTH-independent macro nodular hyperplasia (AIMAH). Only few case reports of the latter condition exist in the radiology literature, PPNAD being the commoner of two as the cause for AICS.
Ashish Verma1 Suyash Mohan1 Archna Gupta1 Email:agupta@sgpgi.ac.in
[1] Department of Radio Diagnosis, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Rae Bareily Road, Lucknow, 226 014, Uttar Pradesh, India
Objective-To evaluate the roles of 5-hydroxytryptamine (5-HT), thromboxane A(2) (TxA(2)), and platelet-activating factor (PAF) in endotoxin-induced digital hypoperfusion in horses. Animals-6 healthy adult Thoroughbreds. Procedures-Horses were treated with IV administration of saline (0.9% NaCl) solution (control treatment) or the 5-HT(1B/D) selective antagonist, GR55562 (0.3 mg/kg), prior to tryptamine infusion (1.6 mug/kg/min for 30 minutes) to establish an effective GR55562 dose. In a crossover study, horses were treated with IV administration of saline solution (control treatment), aspirin (4 mg/kg, 2 hours or 4 days before lipopolysaccharide [LPS] infusion), GR55562 (0.3 mg/kg), the PAF antagonist WEB2086 (3 mg/kg), or aspirin plus GR55562 prior to LPS infusion (30 ng/kg for 30 minutes). Digital blood flow was measured by use of Doppler ultrasonography. Concomitant measurements of hoof wall and coronary band surface temperatures were made. Serial blood samples were collected and plasma 5-HT and TxA(2) concentrations determined. Results-GR55562 abolished tryptamine-induced digital hypoperfusion. Neither WEB2086 nor GR55562 affected LPS-induced alterations in digital perfusion or plasma mediator concentrations. Aspirin given 2 hours before LPS administration abolished the increase in plasma TxA(2) concentration and significantly attenuated LPS-induced digital hypoperfusion. Aspirin given 4 days before LPS significantly attenuated the increase in plasma TxA(2) concentration and digital hypothermia. Aspirin plus GR55562 had a greater effect on LPS-induced digital hypothermia than aspirin alone. Conclusions and Clinical Relevance-Thromboxane A(2) and 5-HT played a role in mediating LPS-induced digital hypoperfusion in horses. Platelet-activating factor appeared unimportant in mediating LPS-induced 5-HT or TxA(2) release or digital hypoperfusion.
Menzies-Gow NJ Sepulveda MF Bailey SR Cunningham FM Elliott J
Department of Veterinary Clinical Sciences, Royal Veterinary College, Hatfield, Hertfordshire AL9 7TA, England.
Leiomyosarcoma of the inferior vena cava is a rare primary tumor. We present a case of a 65-year-old man with the history of cirrhosis; non-specific symptoms. The patient underwent computed tomography; magnetic resonance imaging that revealed a leiomyosarcoma of the infrarenal portion of inferior vena cava. Clinical; imaging features, as well as the surgical technique of resection are discussed.
Spiros Delis1 Charikleia Triantopoulou2Email:chatri@mycosmos.gr Andreas Bakoyiannis1 Nikolaos Tassopoulos3 Christos Dervenis1
[1] Liver Surgery Unit, First Surgery Department, Agia Olga Hospital, Athens, Greece ;[2] CT Department, Agia Olga Hospital, Athens, Greece ;[3] Hepatology Unit, Metropolitan Hospital, Athens, Greece ;[4] 28th October Street, 9, 15452 P. Psyhiko, Athens, Greece
Surgery remains the only curative option for the treatment of pancreatic adenocarcinoma. Local tumor resectability depends on a number of factors, but most importantly, the relationship of the tumor to adjacent arterial structures. For example, surgery is rarely performed when the tumor involves the celiac axis or the superior mesenteric artery. Unexpected variant arterial anatomy or tumor involvement of aberrant arteries may complicate pancreatic surgery. The classic visceral arterial anatomy occurs in only 55%–60% of the population, with one or more variant vessels occurring in the remaining population. Knowledge of both variant; normal anatomy is essential for accurate preoperative planning. We describe here the arterial variant anatomy of the pancreas; its identification by multidetector CT imaging, with; without the aid of post-processed volume-rendered images.
Aparna Balach ran1 Email:abalach ran@di.mdacc.tmc.edu Daryle L. Darden2 Eric P. Tamm1 Silvana C. Faria1 Douglas B. Evans3 Chusilp Charnsangavej1
[1] Diagnostic Radiology, UT MD Anderson Cancer Center, 1515 Holcombe Boulevard Box 0057, Houston, TX 77030, USA ;[2] Radiologic Associates of Fredericksburg, 4718 Carr Drive, Fredericksburg, VA 22408, USA ;[3] Surgical Oncology, UT MD Anderson Cancer Center, 1515 Holcombe Boulevard Box 0444, Houston, TX 77030, USA
Since the application of cross-sectional imaging to the examination of the gastrointestinal tract, dramatic changes have occurred in the modern gastrointestinal fluoroscopic suite. Besides the great decrease in use of fluoroscopy, the types of fluoroscopic examinations requested; performed nowadays are different from those of just 2 or 3 decades ago. This paper will review the recent history; the current uses of fluoroscopy in adults at the beginning of the twenty-first century, illustrated by case images; utilization data from a large academic medical center. Fluoroscopy survives because of its unique illustration of motility in real-time, its superior detection; accurate localization of leaks in post-operative patients,; its ability to provide immediate answers; targeted examinations tailored to the individual patient.
David A. Boyajian1 Email:dboyajian@post.harvard.edu Alex er R. Margulis1
[1] Department of Radiology, NewYork-Presbyterian Hospital/Weill Cornell Medical Center, 525 East 68th Street, New York, NY 10021, USA
Degos disease is a rare idiopathic vasculopathy with multisystem involvement. We present a previously healthy 40-year-old woman who developed spontaneous small bowel infarctions; perforations 17 months after presentation with characteristic skin lesions. The abdominal CT findings of Degos disease, which have not been previously depicted in the radiology literature, are discussed.
Raghu R. Amaravadi1 Email:Raghu.r.amaravadi@lahey.org Tai M. Tran1 Rachel Altman1 Christopher D. Scheirey1
[1] Department of Diagnostic Radiology, Lahey Clinic Medical Center, 41 Mall Road, Burlington, MA 01805, USA
We report CT features of four cases of Eosinophilic enteritis. The disease involves the jejunum in one case, the ileum in two cases,; the colon in the remaining case. Two cases demonstrate a predominantly mucosal type of eosinophilic enteritis, while the other two cases demonstrate a predominantly subserosal type. CT findings include bowel wall thickening in four cases, bowel fold thickening in two cases, layering of the bowel wall in two cases, luminal narrowing without obstruction in three cases, an intra-luminal granuloma mimicking a huge polyp in one case, an extra-luminal irregular granuloma markedly enhancing; slightly necrosing in one case, mesenteric lymphadenopathy with peripheral rim-like enhancement; marked necrosis in one case; ascites in one case. CT findings are more characteristic of an inflammatory disease rather than of a tumor,; these findings are helpful for assessing the extent; location of the disease. Moreover, combined with its typical clinical manifestations, CT findings may lead to the correct diagnosis.
Xiangwu Zheng1 Email:zxwu111@sina.com Jianmin Cheng2 Kehua Pan1 Kaiyan Yang3 Hongqing Wang1 Enfu Wu1
[1] Department of Radiology, The First Affiliated Hospital of Wenzhou Medical College, Wenzhou, 325000, People’s Republic of China ;[2] Department of Radiology, The Second Affiliated Hospital of Wenzhou Medical College, Wenzhou, 325000, People’s Republic of China ;[3] Department of Pathology, The First Affiliated Hospital of Wenzhou Medical College, Wenzhou, 325000, People’s Republic of China
The purpose of this study was to describe of peritoneal manifestations of parasitic infection at CT. A broad spectrum of CT findings can be seen in the peritoneal cavity, including a varying degree of omental or mesenteric infiltration, single or multiple peritoneal mass or nodule,; peritoneal thickening or stranding. Recognition of these findings are crucial for establish an early diagnosis; helps avoid unnecessary surgery.
So Yeon Kim1 Hyun Kwon Ha1 Email:hkha@amc.seoul.kr
[1] Department of Radiology; Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 388-1 Poongnap-Dong, Songpa-Gu, Seoul, 138-040, South Korea