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2014| July-September | Volume 3 | Issue 3
Online since
August 16, 2014
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REVIEW ARTICLE
Duplication cysts: Diagnosis, management, and the role of endoscopic ultrasound
Roy Liu, Douglas G Adler
July-September 2014, 3(3):152-160
DOI
:10.4103/2303-9027.138783
Gastrointestinal tract duplication cysts are rare congenital gastrointestinal malformation in young patients and adults. They consist of foregut duplication cysts, small bowel duplication cysts, and large bowel duplication cysts. Endoscopic ultrasound (EUS) has been widely used as a modality for the evaluation and diagnosis of duplication cysts. EUS is the diagnostic tool of choice to investigate duplication cysts since it can distinguish between solid and cystic lesions. The question of whether or not to perform EUS-fine needle aspiration (EUS-FNA) on a lesion suspected of being a duplication cyst is controversial as these lesions can become infected with significant consequences, although EUS-FNA is often required to obtain a definitive diagnosis and to rule out more ominous lesions. This manuscript will review the literature on duplication cysts throughout the body and will also focus on the role of EUS and FNA with regards to these lesions.
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CASE REPORTS
Endoscopic ultrasound-guided liver biopsy in pediatric patients
Amitpal S Johal, Harshit S Khara, Martin G Maksimak, David L Diehl
July-September 2014, 3(3):191-194
DOI
:10.4103/2303-9027.138794
Endoscopic ultrasound (EUS) is routinely used for diagnostic and therapeutic purposes in adults, and there is emerging literature on its feasibility and safety in children. A recent novel application is EUS-guided liver biopsy (EUS-LB), which has shown to be technically simple, safe, and provides adequate diagnostic yield in adults for evaluation of liver disease; but the use of EUS-LB has never been evaluated in the pediatric population. We report the first case series of EUS-LB in the pediatric population, performed on 3 children, 1 girl and 2 boys-ages 9, 14 and 17 respectively, using a 19-gauge EUS-fine needle aspiration needle. All three cases were performed for the evaluation of unexplained elevated liver enzymes, with above-average diagnostic yield and without any immediate or delayed complications in all children. The use of EUS-LB was pivotal in the management of all the cases. Our case series illustrates the diagnostic utility and safety of EUS-LB in pediatric patients.
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ORIGINAL ARTICLES
Comparison of two techniques for endoscopic ultrasonography fine-needle aspiration in solid pancreatic mass
Amir Alizadeh, Mohammad Hadizadeh, Maryam Padashi, Shahin Shahbaazi, Mahsa Molaee, Zahra Vahdat Shariatpanahi
July-September 2014, 3(3):174-178
DOI
:10.4103/2303-9027.138790
Background:
Endoscopic ultrasonography (EUS) is a newly imagine procedure for assessment and therapeutic in option. The aims of this study are comparison two techniques about EUS-fine-needle aspiration (EUS-FNA), including successful tissue sampling, complication, procedure time, and safety.
Materials and Methods:
A total of 100 patients with pancreatic solid masses were in the study, 50 patients underwent EUS-FNA with negative pressure as Group 1 and 50 patients underwent EUS-FNA without negative pressure and stylet as Group 2 over a 36 months period.
Results:
The study period was from March 2011 to January 2014. In total case, the male-to-female ratio was 1.27 with a mean age of 61.7 ± 1.3 years. The involvement of different regions of the pancreas, pancreatic head had the most frequent (69%) after that uncinate (12%), body (11%) and tail (8%). In 100 pancreatic EUS-FNA samples, 48% were interpreted as malignant on pathology evaluation, 15% as suspicious for malignancy, 27% as benign processes and 10% inadequate specimen. There were no significant differences between the adequacy of sample cells in two techniques (
P
< 0.148).
Conclusion:
The EUS-FNA without negative pressure and stylet technique was related with less contamination by blood and raise the diagnostic yield. We recommend further studies for better evaluation of our study with higher the cases because clinically the low the inadequate samples (6% vs. 14%) and less contamination with blood (20% vs. 50%) in the second group (
P
< 0.002).
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PERSPECTIVE
Endoscopic ultrasound comes of age: Mature, established, creative and here to stay!
Manoop S Bhutani
July-September 2014, 3(3):143-151
DOI
:10.4103/2303-9027.138782
Research in endoscopic ultrasound (EUS) is alive and kicking! This paper will present recent interesting developments in EUS based on research presented at the Digestive Disease Week (DDW) held in Chicago in 2014. Endosonographers are looking at various techniques to improve yield of fine needle aspiration and core biopsies, assess circulating tumor cells, apply EUS for personalized medicine and develop devices to ensure the adequacy of sampling. EUS may open new vistas in understanding of neurogastroenterology and gastrointestinal motility disorders as discussed in this paper. EUS guided drainage of pancreatic fluid collections, bile duct and gallbladder is feasible, and many randomized trials are being done to compare different techniques. EUS guided delivery of fiducials, drugs, coils or chemo loaded beads in possible. EUS has come off age, has matured and is here to stay! The DDW in 2014 in Chicago was a very active year for EUS. There were numerous papers on different aspects of EUS, some perfecting and improving old techniques, others dealing with randomized trials and many with novel concepts. In this paper, I will highlight some of the papers that were presented. It is not possible to discuss all the abstracts in detail. I have, therefore, chosen selected papers in different aspects of EUS to give the readers a flavor of the kind of research that was presented at DDW.
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ORIGINAL ARTICLES
Rectal cancer staging: Correlation between the evaluation with radial echoendoscope and rigid linear probe
Rogério Colaiácovo, Maurício Saab Assef, Ricardo Leite Ganc, Augusto Pincke Cruz Carbonari, Flávio Amaro Oliveira Bitar Silva, Fang Chia Bin, Lúcio Giovanni Giovanni Rossini
July-September 2014, 3(3):161-166
DOI
:10.4103/2303-9027.138786
Background and Objectives:
The National Cancer Institute estimated 40,340 new cases of rectal cancer in the United States in 2013. The correct staging of rectal cancer is fundamental for appropriate treatment of this disease. Transrectal ultrasound is considered one of the best methods for locoregional staging of rectal tumors, both radial echoendoscope and rigid linear probes are used to perform these procedures. The objective of this study is to evaluate the correlation between radial echoendoscopy and rigid linear endosonography for staging rectal cancer.
Patients and Methods:
A prospective analysis of 48 patients who underwent both, radial echoendoscopy and rigid linear endosonography, between April 2009 and May 2011, was done. Patients were staged according to the degree of tumor invasion (T) and lymph node involvement (N), as classified by the American Joint Committee on Cancer. Anatomopathological staging of surgical specimen was the gold standard for discordant evaluations. The analysis of concordance was made using Kappa index.
Results:
The general Kappa index for T staging was 0.827, with general
P
< 0.001 (confidence interval [CI]: 95% 0.627-1). The general Kappa index for N staging was 0.423, with general
P
< 0.001 (CI: 95% 0.214-0.632).
Conclusion:
The agreement between methods for T staging was almost perfect, with a worse outcome for T2, but still with substantial agreement. The findings may indicate equivalence in the diagnostic value of both flexible and rigid devices. For lymph node staging, there was moderate agreement between the methods.
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EDITORIAL
Endoscopic ultrasound's vision: Probing our way to NOTES
Siyu Sun
July-September 2014, 3(3):141-142
DOI
:10.4103/2303-9027.138781
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TRAINING COURSE
Techniques of imaging of nodal stations of gastric cancer by endoscopic ultrasound
Malay Sharma, Praveer Rai, Chittapuram Srinivasan Rameshbabu
July-September 2014, 3(3):179-190
DOI
:10.4103/2303-9027.138793
Nodal staging is of crucial importance in the management of gastric cancer (GC). The available modalities of nodal imaging in GC do not provide a high sensitivity and specificity of lymph node status. Comparative study of endoscopic ultrasonography (EUS) and multislice spiral computed tomography in GC has shown greater accuracy of EUS for N staging. EUS is not used routinely in patients with GC as it is not available at all centers, and its accuracy is operator dependent. Standard techniques of identification of nodal station (as suggested by Japanese Research Society for the Study of Gastric Cancer) by EUS have not been described so far. Identification of each nodal station by EUS requires adequate knowledge of anatomy as well as understanding the proper technique to perform EUS. This review presents a method to identify the regional nodal stations of GC by linear EUS and hence will help in appropriate N staging of GC.
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CASE REPORTS
Pancreatic duct leak in a case of post Whipple surgery: Managed by endoscopic ultrasound guided pancreatogastrostomy
Rajesh Puri, Narendra S Choudhary, Hardik Kotecha, Ankesh Rawat, Randhir Sud
July-September 2014, 3(3):195-197
DOI
:10.4103/2303-9027.138795
Endoscopic ultrasound (EUS) or endoscopic retrograde cholangiopancreatography (ERCP) provides an option of minimal invasive intervention over surgery. EUS-guided pancreatogastrostomy (EPH) is particularly useful in patients with altered anatomy where ERCP is not feasible. This paper reports a case of post Whipple surgery pancreatic ductal leak and external pancreatic fistula, which was managed by EPH. The patient had uneventful post-procedure course and were asymptomatic at 6 months.
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IMAGE IN EUS
An unusual cause of gastric submucosal bulge on endoscopy
Surinder Singh Rana, Ravi Sharma, Vishal Sharma, Deepak Kumar Bhasin
July-September 2014, 3(3):198-199
DOI
:10.4103/2303-9027.138798
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LETTER TO THE EDITOR
Endoscopic ultrasound training in mid-to-late career: Falling prey to the dark side or the bright side?
Todd H Baron
July-September 2014, 3(3):200-201
DOI
:10.4103/2303-9027.138801
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ORIGINAL ARTICLES
Effect of antispasmodic drugs on endoscopic ultrasound/endoscopic ultrasound-guided fine-needle aspiration: A multicenter randomized controlled trial
Masaki Kuwatani, Hiroshi Kawakami, Tsuyoshi Hayashi, Kazunori Eto, Hiroaki Yamato, Manabu Onodera, Hirohito Naruse, Koji Oba
July-September 2014, 3(3):167-173
DOI
:10.4103/2303-9027.138788
Background and Objective:
Antispasmodic drugs (ADs) have been used to reduce examination time or improve the quality of gastrointestinal endoscopy, although the practice is controversial. No evidence about the efficacy of AD for endoscopic ultrasonography/EUS-guided fine-needle aspiration (EUS/EUS-FNA) is available. This study was aimed to evaluate the efficacy of AD in EUS/EUS-FNA.
Patients and Methods:
A total of 400 patients with pancreaticobiliary, peripancreatic, or peribiliary disease or disorder undergoing EUS/EUS-FNA were prospectively and evenly randomized to undergo EUS/EUS-FNA with AD (w-AD) or without AD (w/o-AD). The primary endpoint was total EUS/EUS-FNA examination time. The secondary endpoints were visual analogue scale (VAS) scores of endoscopists (patient body motion, gastrointestinal peristalsis, and accomplishment of the purpose) and patients (pain, discomfort, and willingness to undergo re-examination), vital sign changes, adverse events, and sedative dose.
Results:
Two hundred patients in the w-AD group and 197 patients in the w/o-AD group were ultimately analyzed. The total examination time was similar between the groups (2299 ± 937 vs. 2259 ± 1019 s). The difference in total examination time from w/o-AD group to w-AD group was −40 s (95% confidence interval, −234-153 s), which was within the noninferiority margin. No statistical differences were observed in endoscopist and patient VAS scores, changes in vital signs, adverse events, or total sedative dose other than fentanyl between the groups.
Conclusion:
EUS/EUS-FNA can be effectively and safely performed w/o-AD. Further, randomized controlled trials on EUS/EUS-FNA in various disease entities may be required to confirm the results of this study (UMIN000008047).
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Online since 20 August, 2013