Current status and progress of pancreatic surgery in the past 20 years / 中华消化外科杂志

Pancreatic surgery is an important specialty in the field of general surgery. As the anatomical location of pancreas is deeply and complex, and the diseases of pancreatic surgery is various kinds of and serious with high difficulty in surgery, the development of pancreatic surgery is slowly in the past. In the recent 20 years, with the deepening of basic and clinical researches in related fields, researchers' cognition of pancreatic diseases has gradually deepened. A series of new con-cepts and techniques have been applied to pancreatic surgery, making pancreatic surgery enter a rapid development stage. At the same time, researchers also recognize that the existing medical concepts and technical means are not sufficient to solve all clinical problems. Therefore, the cancer of pancreatic surgery in China can be alive and flourishing by grasping the opportunities, making continuous exploration and innovation.

Pancreatitis aguda necrotizante infectada. Desbridamiento retroperitoneal video asistido / Infected necrotizing pancreatitis. Video-assisted retroperitoneal debridement

Resumen El tratamiento escalonado de la pancreatitis aguda necrotizante infectada consiste en el uso de antibióticos de amplio espectro, drenaje y necrosectomía mínimamente invasiva, si fuese necesaria. Esto ha reemplazado a la cirugía abierta como el estándar de tratamiento. El desbridamiento retroperitoneal video asistido (VARD), es una forma de necrosectomía quirúrgica mínimamente invasiva. Presentamos una serie de 5 casos (2 mujeres y 3 varones) con pancreatitis aguda grave y necrosis pancreática infectada tratados de forma escalonada y VARD. El rango de edad fue de 27 a 60 años. Todos los pacientes tuvieron pancreatitis de etiología biliar. El rango del APACHE II fue de 16 a 20. El rango del tiempo para el drenaje percutáneo lumbar fue de 4 a 7 semanas. Hubo una complicación del drenaje percutáneo (fistula duodenal) que se resolvió con tratamiento médico. Los cultivos de todas las necrosis fueron positivos. El tiempo para la realización del VARD tuvo un rango de 6 a 10 semanas. Un paciente requirió dos procedimientos. Hubo dos fístulas pancreáticas tipo B asociadas al VARD, que se trataron conservadoramente. No hubo mortalidad. A largo plazo, dos pacientes fueron diagnosticados de insuficiencia pancreática exocrina y endocrina. Concluimos que en los pacientes con necrosis pancreática infectada que requieran desbridamiento, el VARD es una alternativa segura, efectiva y con buenos resultados a largo plazo.

Abstract The step-up approach for infected necrotizing pancreatitis, consisting of broad-spectrum antibiotics, drainage followed, if necessary, by minimally invasive necrosectomy, has replaced open surgery as the standard of management. Video-assisted retroperitoneal debridement (VARD) is a surgical minimally invasive necrosectomy. This is a 5 cases series (2 female and 3 males) with severe acute pancreatitis and infected pancreatic necrosis who underwent step up approach and VARD. The age ranged from 27 to 60 years old. Al patients had biliary pancreatitis. APACHE II ranged from 16 to 20. The time to percutaneous lumbar drainage ranged from 4 to 7 weeks. There was one complication associated with percutaneous drainage (duodenal fistula) with nonoperative management. All necrotizing pancreatitis had positive cultures. The time to perform VARD ranged from 6 to 10 weeks. One patient required two procedures. There were two type B pancreatic fistulas associated with VARD, managed nonoperatively. There was no mortality. During long-term follow-up two patients were diagnosed with exocrine and endocrine pancreatic insufficiency. We conclude that VARD is a safe and effective procedure in patients with infected necrotizing pancreatitis requiring debridement, and with good long-term outcomes.

Step up approach for the management of late presentation of pancreatic trauma patients

Background: Pancreatic injuries are usually subtle to identify by different diagnostic imaging modalities and these injuries are often overlooked in cases with extensive multi-organ trauma. Our study was conducted to evaluate the outcome of a step-up approach in the management of pancreatic trauma patients with late presentation.Methods: The study included 15 patients who presented with grade III AAST delayed presentation of pancreatic trauma from September 2017 to 2019. In our step-up approach 2 staged procedure was done, firstly laparotomy with necrosectomy along with closure of proximal pancreatic duct with external drainage of pancreatic duct, in second stage Roux-en-Y pancreaticojejunostomy was done to drain the remnant pancreas as a definitive procedure 3 to 6 months after initial procedure.Results: In our study, blunt trauma abdomen (83.30%) (n=10) was the most common mode of injury. The main reason for delay in diagnosis of pancreatic trauma was delayed presentation of patient (83.3%) (n=10). Total of 4 patients were admitted to intensive care unit (ICU) at the time of admission. 10 patients underwent both the stages of step up approach management among which one patient had pancreatic fistula as a complication (n=1) (10%) and one patient had post-operative abscess as a complication (n=1) (10%). No mortality was noted in our study.Conclusions: The step-up approach discussed above proves to be beneficial towards management of patients with delayed presentation of pancreatic trauma in our setting.

Interpretation of American Gastroenterological Association Clinical Practice update: management of pancreatic necrosis in acute pancreatitis patients / 中国实用外科杂志

American Gastroenterological Association(AGA)has published the latest clinical practice update in Gastroenterology in August 2019. The purpose of this AGA clinical practice update is to review the available evidence and expert recommendations regarding the clinical care of patients with pancreatic necrosis and to offer concise best practice advice for the optimal management of patients with this highly morbid condition. In recent decades,with the improvement in clinical practice,the management of pancreatic necrosis in patients with acute pancreatitis(AP)has undergone great changes. The well-defined step-up approach has been more advocated rather than the traditional open surgery. The treatment of pancreatic necrosis mainly includes two aspects,conservative methods, which consist of antimicrobial therapy as well as nutrition support,and invasive interventions.Drainage and/or debridement of pancreatic necrosis is best indicated in patients with infected necrosis or patients with sterile pancreatic necrosis and persistent clinical symptoms,which need proactive management. A step-up approach consists of percutaneous drainage or endoscopic transmural drainage, followed by direct endoscopic/percutaneous minimally invasive necrosectomy, and then surgical debridement is reasonable. As for the comparison between percutaneous surgical or endoscopic step-up approach,no studies have shown that there are differences between the two in the main clinical outcomes,for instance,mortality. Hence,the choice of specific treatment strategy in different AP centers depends mainly on their available clinical expertise and medical resources.

Imaging features, when and how to perform minimally invasive intervention in infected pancreatic necrosis patients / 中国实用外科杂志

Recently,with the further understanding of infected pancreatic necrosis(IPN),pancreatologists have reached consensuses on that the presence of gas on CT imaging could be the golden standard diagnosis for IPN,the intervention timing for IPN should be delayed to four weeks later,and the step-up approach acts as the first standard treatment strategy for IPN.Whereas in clinical practice,there are substantial new challenges awaiting our solutions,for instance,the lack of accurate and specific diagnostic criteria for IPN without typical gas sign on CT imaging,whether the intervention of wall-off necrosis(WON)which got infected prematurely should be delayed to four weeks later?What's more,whether the endoscopy centered step-up approach is superior to the surgical step-up approach?Is it time to abandon open surgery in IPN management?If not,when should we switch to open necrosectomy?All of these questions are still full of controversies.

Surgical intervention strategy for severe acute pancreatitis in minimally invasive era / 中华外科杂志

With the development of minimally invasive concept, the treatment mode of severe acute pancreatitis has changed greatly. The tendency of surgical intervention has changed from excessive intervention to inadequate intervention. The timing of intervention has changed from earlier to later, and the mode of intervention has changed from openness as the main way to minimally invasive as the guidance. The transformation of surgical intervention tendency conforms to both minimally invasive trend and the step-up approach, but there are still some shortcomings: inadequate surgical intervention, inappropriate timing and indications, and over dependence on minimally invasive surgery. Correctly grasping the indications of surgical intervention, accurately grasping the timing of surgical intervention, and reasonably choosing the mode of surgical intervention are the keys to solve the insufficiency of surgical intervention. Laying emphasis on multidisciplinary team and correctly recognizing the role and status of surgical intervention can effectively reduce the mortality of severe acute pancreatitis patients.

Research advances in minimally invasive treatment of acute pancreatitis / 中华肝胆外科杂志

The "step-up approach" concept in acute pancreatitis treatment has been widely accepted.Recently minimally invasive treatment plays a crucial role in acute pancreatitis treatment.The application of minimally invasive treatment significantly reduced the trauma and related complications caused by surgery and enhanced the prognosis.Currently,variety of minimally invasive approaches are specific and effective.This review summarized the therapeutic methods as well as the advantages and limitations of minimally invasive treatment.We aim to help clinicians balance the pros and cons and choose the individualized way to improve the prognosis.

Necrotizing pancreatitis: description of videoscopic assisted retroperitoneal debridement (vard) technique with covered metallic stent / Pancreatite necrosante: descrição da técnica de debridamento videoendoscópico retroperitoneal (vard) assistida com stent metálico recoberto

ABSTRACT Background : Acute pancreatitis is the third most common gastrointestinal disorder requiring hospitalization in the United States, with annual costs exceeding $2 billions. Severe necrotizing pancreatitis is a life-threatening complication developed in approximately 20% of patients. Its mortality rate range from 15% in patients with sterile necrosis to up 30% in case of infected one associated with multi-organ failure. Less invasive treatment techniques are increasingly being used. These techniques can be performed in a so-called step-up approach. Aim: To present the technique for videoscopic assisted retroperitoneal debridement (Vard technique) with covered metallic stent in necrotizing pancreatitis. Method: A guide wire was inserted through the previous catheter that was removed in the next step. Afterwards, the tract was dilated over the guide wire. Then, a partially covered metallic stent was deployed. A 30 degrees laparoscopic camera was inserted and the necrosis removed with forceps through the expanded stent under direct vision. Finally, the stent was removed and a new catheter left in place. Result : This technique was used in a 31-year-old man with acute pain in the upper abdomen and diagnosed as acute biliary pancreatitis with infected necrosis. He was treated with percutaneous drains at weeks 3, 6 and 8. Due to partial recovery, a left lateral VARD was performed (incomplete by fixed and adherent tissue) at 8th week. As the patient´s inflammatory response was reactivated, a second VARD attempt was performed in three weeks later. Afterwards, patient showed complete clinical and imaging resolution. Conclusions : Videoassisted retroperitoneal necrosectomy using partially covered metallic stent is a feasible technique for necrotizing pancreatitis.

RESUMO Racional: A pancreatite aguda é a terceira doença gastrointestinal mais comum que requer hospitalização nos Estados Unidos, com custos anuais superiores a $ 2 bilhões. A pancreatite necrosante grave é uma complicação potencialmente fatal, desenvolvida em aproximadamente 20% dos pacientes. A taxa de mortalidade varia de 15% em pacientes com necrose estéril para 30% no caso de uma infecção infectada com falência multiorgânica. As técnicas de tratamento menos invasivas são cada vez mais utilizadas. Elas podem ser realizadas em uma abordagem chamada "step-up". Objetivo: Apresentar a técnica de desbridamento retroperitoneal assistido com videografia (técnica VARD) com stent metálico coberto em pancreatite necrosante. Método: Um fio guia é inserido através do cateter anterior que foi removido no próximo passo. Depois, o trajeto é dilatado sobre o fio guia. Em seguida, um stent metálico parcialmente coberto é implantado. Uma câmera laparoscópica de 30º é inserida e a necrose removida com fórceps através do stent expandido sob visão direta. Finalmente, o stent é removido e um novo cateter deixado no lugar. Resultado: Esta técnica foi utilizada em um homem de 31 anos com dor aguda na parte superior do abdome e diagnosticado como pancreatite biliar aguda com necrose infectada. Ele foi tratado com drenos percutâneos nas semanas 3, 6 e 8. Devido à recuperação parcial, realizou-se um VARD lateral esquerdo (incompleto por tecido fixo e aderente) na 8ª semana. À medida que a resposta inflamatória do paciente foi reativada, uma segunda tentativa VARD foi realizada em três semanas mais tarde. Posteriormente, o paciente apresentou resolução clínica e de imagem completa. Conclusão: A necrosectomia retroperitoneal assistida em vídeo com stent metálico parcialmente coberto é uma técnica viável para pancreatite necrosante.

Minimally invasive treatment of acute necrotizing pancreatitis / 国际外科学杂志

The treatment strategy for infected acute necrotizing pancreatitis is that enables recovery but at the same time limits the morbidity and mortality.The current gold standard remains open necrosectomy.Recent literature contains scattered reports of percutaneous drainage,endoscopic,and laparoscopic approaches to managing patients with this condition.This review addresses the role of minimally invasive approaches and treatment strategy in patients with infected acute necrotizing pancreatitis.