Publications by authors named "Omar J Shah"

Pancreatic cancer surgery, with one of the worst prognoses in oncology, is a challenge to the surgical community. Centralization of pancreatic surgery has led to the foundation of high-volume centers, thereby greatly facilitating the successful performance of more radical approaches. This review spotlights on recent advances in surgical approaches to pancreatic cancer and the risks and benefits of vascular reconstruction to improve resectability.

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Purpose: To understand the actual impact of the Covid-19 pandemic and frame the future strategies, we conducted a pan India survey to study the impact on the surgical management of gastrointestinal cancers.

Methods: A national multicentre survey in the form of a questionnaire from 16 tertiary care gastrointestinal oncology centres across India was conducted from January 2019 to June 2021 that was divided into a 15-month pre-Covid era and a similar period of active Covid pandemic era.

Results: There was significant disruption of services; 13 (81%) centres worked as dedicated Covid care centres and 43% reported suspension of essential care for more than 6 months.

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Background: Pancreatic cancer (PC) is one of the deadliest malignancies with an alarming mortality rate. Despite significant advancement in diagnostics and therapeutics, early diagnosis remains elusive causing poor prognosis, marred by mutations and epigenetic modifications in key genes which contribute to disease progression.

Aim: To evaluate the various biological tumor markers collectively for early diagnosis which could act as prognostic biomarkers and helps in future therapeutics of PC in Kashmir valley.

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Article Synopsis
  • The study evaluated the effectiveness and safety of image-guided percutaneous catheter drainage (PCD) for managing pancreatic collections (PCs) caused by acute pancreatitis.
  • Conducted over four years with 60 patients, the study showed PCD success rates of 80% for acute peripancreatic fluid collections and pancreatic pseudocysts, 75% for walled-off necrosis, and 50% for acute necrotic collections.
  • The results indicated that PCD is a minimally invasive option with a low complication rate, making it a viable treatment for infected or symptomatic PCs, with fewer patients needing further surgical intervention.
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Deleted in colorectal carcinoma (rs714) is the most widely studied SNP of tumor suppressor gene found to be associated with increased risk of various cancers. Therefore, the aim of present case control study was to investigate the role of (rs714) in gallbladder cancer GBC) in Kashmir and to conduct a meta-analysis of (rs714) polymorphism to demonstrate the more accurate strength of these associations. Genotyping was done by PCR/RFLP and confirmed by sequencing in 100 GBC cases, and 150 controls.

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Glutathionetransferase T1 (GSTT1) and glutathionetransferase M1 (GSTM1) genes are associated with increase susceptibility to developing different types of cancers. The aim of present study was to investigate the role of genetic variants of GSTM1 and GSTT1 in gallbladder cancer (GBC) and cholelithiasis in Kashmir valley. Genotyping was done by multiplex polymerase chain reaction in 100 GBC, 100 cholelithiasis, and 150 controls adjusted by age and sex.

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Cases of biliary ascariasis and hydatid cysts in liver and elsewhere are common in endemic areas and are routinely encountered in surgical outpatient departments. We describe the diagnosis and management of a unique case, who presented with manifestations of biliary ascariasis, but on further investigation was found to harbor ascarids as well as ruptured hydatids in his biliary passages. To our knowledge, this is the first reported case of simultaneous parasitization of common bile duct by ascarid and hydatid forms, resulting in obstruction of the biliary system.

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Smoothened (SMO) is a significant signalling protein which functions as a key transducer for the hedgehog signalling pathway, an important signalling mechanism with key roles in development and oncogenesis. The correlation of expression dynamics of SMO with pancreatic and colorectal cancer genesis has been known but with ambiguity. Therefore, in this study, we investigated messenger RNA (mRNA) and protein expression of SMO in pancreatic and colorectal cancers in our population and assessed relationship with various clinicopathological parameters.

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Sonic hedgehog (SHH) is a secreted protein which functions in autocrine or paracrine fashion on target cells to activate hedgehog (HH) signalling cascade responsible for growth and proliferation. This study is an attempt to understand the expression dynamics of SHH protein in colon, rectal and pancreatic cancers. Protein expression of SHH was studied by Western Blotting in the histologically confirmed colon, rectum and pancreatic cancer tissue samples along with their adjacent normal tissues.

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Article Synopsis
  • Children with extrahepatic portal vein obstruction (EHPVO) often experience growth retardation, potentially due to growth hormone (GH) resistance.
  • A study comparing 30 children with EHPVO to controls found that those with EHPVO had significantly lower height and weight standard deviation scores (SDS), although their GH levels were higher.
  • Following shunt surgery, a significant improvement in growth parameters was observed in 12 of the children, indicating that surgical intervention can be beneficial for their growth.
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Background: Fast track strategy in the management of patients undergoing intra-abdominal surgery of various types has emerged as a landmark approach to reduce surgical stress and accelerate recovery. This study was to evaluate the effect of fast track strategy on patients subjected to pancreaticoduodenectomy (PD) from an individual unit during transit from low to a high volume center.

Methods: A total of 142 PD patients who had been subjected to fast track strategy between June 2008 and September 2012 were compared with 46 patients who had received conventional surgery between January 2006 and May 2008.

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Aim: To analyse the impact of turning of our department from a low to a high volume provider of pancreaticoduodenectomy (PD) on surgical outcome.

Methods: A retrospective collection of data was done for patients who underwent PD. According to the number of PDs undertaken per year, we categorized the volume into low volume (< 10 PDs/year), medium volume (10-24 PDs/year) and high volume (> 25 PDs/year) groups.

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Background: Major complications after pancreaticoduodenectomy are usually caused by a leaking pancreaticojejunal anastomosis. Omental flaps around various anastomoses were used to prevent the formation of fistula.

Methods: We reviewed 147 patients who had undergone pancreaticoduodenectomy between March 2006 and March 2012.

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Background: Pancreaticoduodenectomy is a high risk, complex, technically challenging operation associated with significant perioperative morbidity and mortality. This study on the surgical management of periampullary cancer patients is based on our experience in a period of nearly 13 years.

Methods: The study was conducted on two groups of patients: group A included 42 patients who were treated between January 2000 and September 2005 and group B included 134 patients who were treated between October 2005 to October 2012.

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Aim: This prospective, randomized comparative study conducted in Kashmir evaluated the clinical profile of colonic carcinoma and the efficacy, side effects and survival advantage of adjuvant treatment with 5FU/CLV versus FOLFOX7.

Materials And Methods: Between 2007 and 2009, the clinical profiles of 50 patients enrolled and randomized equally into Arm A receiving 5FU/CLV alone (Mayo Clinic Regimen) and Arm B receiving the FOLFOX7 regimen (including oxaliplatin) were evaluated.

Results: Majority of the patients were in the 5(th) and 6(th) decade of life (males 70% versus females 30%), and most were from urban dwellings.

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Choledochal cysts of the cystic duct are extremely unusual and only single case reports are documented in the literature. The widely used Todani classification does not include such type of lesions. We present a case of a young girl with a cystic duct choledochal cyst diagnosed preoperatively and confirmed intraoperatively.

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Background: Pancreaticoduodenectomy (PD) is the standard procedure for resecting tumors arising from the periampullary area and the pancreatic head. Nevertheless this procedure is inherently difficult and associated with high morbidity and mortality. Besides, the technique applied for exposing the portal and superior mesenteric veins is time-consuming, difficult and associated with the risk of major venous injury.

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Extrahepatic portal venous obstruction (EHPVO) is a common cause of portal hypertention in children. Esophageal variceal hemorrhage is a major cause of morbidity and mortality in these patients. For many decades, portal systemic shunts were considered as the most effective treatment of variceal hemorrhage.

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Background: Hepatolithiasis affecting the left hepatobiliary system is common in the Asia Pacific region. This aim of this study was to describe an experience with the diagnosis and treatment of patients with isolated left-sided hepatolithiasis.

Methods: One hundred and ten patients with isolated left-sided hepatolithiasis who underwent a left-sided hepatic resection between January 1999 and February 2010 were included for further analysis.

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Context: The pancreas is an infrequent site of hydatid disease.

Objective: This study aims at giving better insight into the diagnostic and managerial approach to the disease.

Patients: Six patients with hydatid cysts of the pancreas.

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Hydatid cyst liver rupture into the biliary tree may involve the common hepatic duct, lobar biliary branches, the small intrahepatic bile ducts or rarely the gallbladder. Rupture can be occult or frank. A frank intrabiliary rupture of hepatic hydatid cyst is a rare but serious event.

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Background: Choledochal cyst is a surgical problem usually related to infancy and childhood. Despite advancements in management, a large number of cases still present during adulthood. The clinical course and outcome in children varies from that in adults.

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