Da Vinci robot-assisted pylorus and vagus nerve-preserving partial gastrectomy for gastric cancer / 中华胃肠外科杂志

Objective: To investigate the safety and feasibility of Da Vinci robot-assisted pylorus and vagus nerve-preserving partial gastrectomy for gastric cancer. Methods: In this study, descriptive case series method was used to retrospectively analyze the data of 3 patients with gastric cancer who underwent Da Vinci robot-assisted pylorus and vagus nerve-preserving partial gastrectomy in the First Affiliated Hospital of Dalian Medical University from December 2020 to February 2021. The linear layout was adopted for the setting of trocar, and the co-axial direction was the line connecting the umbilicus and splenic hilum. The inferior pyloric arteries and veins need to be preserved. The center was the bifurcation of the right gastroepiploic vessel and the inferior pyloric vessel. Dissection and exposure were performed from the upper, lower, right and left sides, and ventral and dorsal sides to complete the dissection of the inferior pyloric lymph nodes. The superior border of the pancreas was treated by the right diaphragmatic crus approach, the left retroperitoneal approach and the esophageal approach to determine the distribution of the posterior vagal trunk and its branches, and to determine the anatomical relationship with the left gastric artery. The left gastric artery was cut off while the celiac branch of vagus nerve and cardia branch of left gastric artery were preserved. Lymph node dissection was performed on the lateral side of nerve fibers around the blood vessels. Result: All the 3 patients successfully completed the robotic surgery without conversion to laparoscopy or laparotomy. The operation time was (340.0±26.4) (300-390) minutes, the intraoperative blood loss was (13.3±3.3) (10-20) ml, the number of dissected lymph nodes was 26.7±3.9 (19-32), the length of pylorus canal preserved was (3.3±0.3) (3-4) cm, the distal margin was (2.3±0.3) (2-3) cm, and the proximal margin was (3.0±0.6) (2-4) cm. No postoperative complications occurred in all the 3 patients. The first flatus time was 2-3 days after operation, and the postoperative hospital stay was 6-7 days. The operation cost of the 3 patients was (40±7) (33-53) thousand yuan. Conclusion: Da Vinci robot-assisted pylorus and vagus nerve-preserving partial gastrectomy is safe and feasible.

Laparoscopic versus open pylorus-preserving pancreatoduodenectomy. The first meta-analyse of retrospective matched cases

Abstract Purpose: To compare the safety, feasibility, and short-term clinical benefits of laparoscopic pylorus-preserving pancreaticoduodenectomy (L-PPPD) to open pylorus-preserving pancreaticoduodenectomy (O-PPPD) through retrospective matched cases. Methods: Web of Science, Cochrane, PubMed, CNKI were searched systematically identify studies published between January and December 2017 comparing L-PPPD to O-PPPD. The meta-analysis was performed by using Review Manager 5.3. Results: Two studies matched the selection criteria, including 108 (50%) cases of laparoscopic pylorus-preserving pancreaticoduodenectomy and 108(50%) cases of open pylorus-preserving pancreaticoduodenectomy. None of the included studies were randomized, which were both retrospective matched cases. There was no difference in the incidence of postoperative pancreatic fistula, blood loss, diet start and lymph nodes. However, L-PPPD has a shorter hospital stay (p=0.0003) and O-PPPD has a shorter operative time (p=0.02) and tend to decrease the delayed gastric emptying. Conclusions: The perioperative safety of laparoscopic surgery, which also has advantages of minimal invasion and shorter hospital stay, is comparable to that of open surgery. Laparoscopic surgery could be operated if the patients matched the indication and operation difficulty is not so great. However, blind pursuits of L-PPPD should be restrained because there is no essential difference between these two in terms of feasibility, safety and short-term complication.

Influence of duodenogastric reflux in the gastric mucosa histological changes of rats infected with Helicobacter pylori / Influência do refluxo duodenogástrico nas alterações histológicas da mucosa gástrica de ratos infectados com Helicobacter pylori

ABSTRACT Objective: to evaluate the influence of Duodenal reflux in histological changes of the gastric mucosa of rats infected with Helicobacter pylori submitted to pyloroplasty. Methods: after two weeks of acclimation, we infected 30 male Wistar rats with Helicobacter pylori. We randomly divided them into three groups: one submitted to pyloroplasty, another to partial gastrectomy and the third, only infected, was not operated. After six months of surgery, euthanasia was carried out. Gastric fragments were studied by light microscopy to count the number of H. pylori, and to observe the histological changes (gastritis, metaplasia, dysplasia and neoplasia). We confirmed these changes by immunohistochemistry using the molecular markers PCNA and TGF-beta. Results: the animals submitted to pyloroplasty had higher percentage of colonization by H. pylori (median=58.5; gastrectomy=16.5; control=14.5). There was a positive correlation between the amount of H. pylori and the occurrence of chronic gastritis present in the antral fragments. Neoplasia occurred in 40% of rats from the group submitted to pyloroplasty. The staining with PCNA and TGF-ß confirmed the histopathological changes visualized by optical microscopy. Conclusions: the antral region was the one with the highest concentration of H. pylori, regardless of the group. There was a positive correlation between the appearance of benign disorders (chronic gastritis, metaplasia, dysplasia) and cancer in mice infected with H. pylori submitted to pyloroplasty.

RESUMO Objetivo: avaliar a influência do refluxo duodenogástrico nas alterações histológicas da mucosa gástrica de ratos, infectados por Helicobacter pylori, submetidos à piloroplastia. Método: após duas semanas de aclimatação, 30 ratos machos da raça Wistar, foram infectados com o microorganismo patogênico H. pylori. De forma aleatória, foram divididos em três grupos: um submetido à piloroplastia, outro à gastrectomia parcial e o terceiro, apenas infectados, não foi operado. Após seis meses de operados, procedeu-se a eutanásia. Os fragmentos gástricos foram estudados por microscopia óptica, para a contagem da quantidade de H. pylori, e para a observação das alterações histológicas (gastrite, metaplasia, displasia e neoplasia). A confirmação dessas alterações foi feita por imuno-histoquímica, utilizando os marcadores moleculares PCNA e TGFbeta. Resultados: os animais submetidos à piloroplastia tiveram maior percentual de colonização por H. pylori (mediana=58,5; gastrectomia=16,5; controle=14,5). Houve correlação positiva entre quantidade de H. pylori e ocorrência de gastrite crônica presente nos fragmentos do antro. Ocorreu 40% de neoplasia no grupo submetido à piloroplastia. A marcação de PCNA e TGF-beta confirmou as alterações histopatológicas visibilizadas à microscopia óptica. Conclusões: a região do antro foi a que apresentou a maior concentração de H. pylori, independente do grupo. Houve correlação positiva entre e o aparecimento de alterações benignas (gastrite crônica, metaplasia, displasia), e de neoplasia nos ratos infectados com H. pylori submetidos à piloroplastia.

Atresia de píloro: comunicación de 3 casos / Pyloric atresia: a report of 3 cases

La atresia de píloro es una malformación digestiva infrecuente. La ecografía prenatal mostrará polihidramnios y dilatación gástrica fetal. En el 20% de los casos, la atresia de píloro se asocia con epidermólisis bullosa, una anomalía cutáneo-mucosa de alta morbimortalidad. En la ecografía prenatal, se podrá ver el signo de los "copos de nieve" en el líquido amniótico y alteraciones auriculares en el feto. Por biopsia corial, se determinan mutaciones genéticas asociadas con epidermólisis bullosa, que confirman la asociación y permiten asesorar a los padres portadores. La herencia es autosómica recesiva y 25% de los hijos pueden manifestarla. El recién nacido con atresia de píloro tendrá vómitos no biliosos y la radiografía abdominal mostrará dilatación gástrica y ausencia de aire intestinal. La atresia de píloro es una malformación corregible quirúrgicamente, con buen resultado. Se presentan tres neonatos con atresia pilórica.

Pyloric atresia is a rare malformation of the alimentary tract. Fetal gastric dilatation and polihydramnios are the main prenatal sonographic findings. In 20% of the cases epidermolysis bullosa is associated. This is a group of genetic anomalies affecting the skin and mucous membranes, which appear fragile and easily blistering. Therefore, this association should be investigated as soon as pyloric atresia is prenatally suspected. The "snow flake" sonographic sign in the amniotic fluid and some irregularities in the fetal's ears could be found and should motivate the investigation of those gene mutations known to be related to epidermolysis bullosa, in order to accomplish an appropriate familial counseling. The parents would be carriers of certain mutation and 25% of the siblings will be affected. A newborn with pyloric atresia will soon exhibit non-bilious vomiting and distention of the upper abdomen. A huge gastric dilatation and a gasless intestine will be apparent in the abdominal plain x-ray. Pyloric atresia is a surgically resolvable malformation. We present herein three patients with this infrequent anomaly.

Ultrasound guided rectus sheath blockade compared to peri-operative local anesthetic infiltration in infants undergoing supraumbilical pyloromyotomy

Provision of appropriate analgesia for supraumbilical pyloromyotomy in infants is limited by concerns about sensitivity to opioids and other medication groups, due to immature metabolism. Local anesthetic infiltration and ultrasound guided rectus sheath blockade are two techniques commonly employed to provide perioperative analgesia. The aim of this review was to compare the quality of post-operative analgesia afforded by these two techniques. A retrospective chart analysis of hospital records of all patients who underwent supraumbilical pyloromyotomy at a tertiary pediatric hospital between March 2009 and February 2011. Analysis of the anesthetic technique employed and post-operative acetaminophen requirements were performed. Additional information as to time to first post-operative feed, any complications and time of discharge from the hospital were collected by reviewing the post-operative nursing notes. A total of 30 patients underwent supraumbilical pyloromyotomy during this period. A total of 18 received local anesthetic infiltration at the end of the procedure and 12 patients underwent ultrasound guided pre-incisional rectus sheath block for post-operative analgesia. Patients who had post-operative local anesthetic infiltration had a median [range] of 2 [1-3] doses of acetaminophen in the first 24 h. In the group of patients who received a rectus sheath block, the median [range] number of doses of acetaminophen in the first 24 h was also 2 [1-3]. There were no differences in time to first feed and time to hospital discharge between the groups. The volume of local anesthetic administered was significantly smaller in the group receiving analgesia via rectus sheath block. Local anesthetic infiltration and pre-incisional ultrasound guided rectus sheath block provide similar degrees of post-operative analgesia. There were no differences between the two groups in time for first post-operative feed and time to hospital discharge.

Influência do refluxo duodenogástrico nas alterações histológicas da mucosa gástrica em ratos infectados por Helicobacter pylori: Modelo experimental / Influence of duodenogastric reflux in histological changes in mice infected by Helicobacter pylori: experimental model

O Helicobacter pylori, é tido como o principal fator de risco para o carcinoma gástrico. Diferentes estudos experimentais em animais procuram relacionar essa carcinogênese a outros fatores carcinógenos sem sucesso. Neste estudo, procurou-se avaliar-se em ratos, se há correlação entre o refluxo duodenogástrico, o Helicobacter pylori e o desenvolvimento do câncer gástrico ou de seus precursores. Para tal, realizou-se nos três grupos de ratos (n de dez por grupo) as técnicas de: piloroplastia precedida de infecção, gastrectomia subtotal precedida de infecção e um grupo no qual foi praticada apenas a infecção. Apois seis meses, analisou-se as alterações da mucosa, comparando-se os três grupos. As alterações da mucosa pesquisadas foram as seguintes: gastrites, metaplasias, displasias e neoplasias epiteliais. Ao término do estudo, foi encontrado, no grupo submetido a piloroplastia precedida de infecção um alto percentual de alterações epiteliais. Conclui-se que, no rato, a operação de piloroplastia, levou ao maior desenvolvimento da população do Helicobacter pylori, que se relaciona com as lesões pré- malignas e o adenocarcinoma gástrico

Helicobacter pylori is considered the main risk factor for gastric carcinoma. Different experimental studies in animals seek to relate this carcinogenesis to other carcinogenic factors without success. This study sought to evaluate in rats, if there was a correlation between duodenogastric reflux, Helicobacter pylori and the development of gastric cancer or its precursors. To this end, it was carried out in three groups of rats the techniques: pyloroplasty, subtotal gastrectomy and only infection. After six months, the changes in mucosa were analyzed comparing the three groups. The mucosal changes reseached were: gastritis, metaplasia, dysplasia and epithelial neoplasms. At the end of the study, was found in the group that underwent pyloroplasty a high percentage of epithelial alterations and these correlated with the population of Helicobacter pylori. It is concluded that in the rat, the operation of pyloroplasty led to increased colonization of the population of Helicobacter pylori and is related with the development of benign lesions and gastric cancer

Clinical and nutritional status in the late postoperative of pancreaticoduodenectomy: influence of pylorus preservation procedure / Estado clínico e nutricional no pós-operatório tardio de pancreaticoduodenectomia: influência da preservação do piloro

PURPOSE: To evaluate the nutritional status of patients in the late postoperative period of pancreaticoduodenectomy (PD) and compare the long-term outcome according to pylorus-preserving (PPPD) or the standard technique (SPD) in which the pylorus is resected. METHODS: This prospective study was conducted twelve months prior or more in patients who had underwent PD (PD Group, n=15) and health volunteers (Control Group, n=15). At a post hoc analysis, the PD Group was divided in PPPD Subgroup (n=9) and SPD Subgroup (n=6), according to the PD techniques. Gastrointestinal complaints and nutritional status were evaluated, apart from a biochemical assessment; Student t-test or Mann-Whitney test were used. RESULTS: The patients recovered their body weight and the gastrointestinal complaints were uncommon. The PD Group showed higher energy and protein intake even though BMI was lower than in Control Group. There were no differences in laboratorial data, except for higher glycemia, serum alkaline phosfatase and C-reactive protein in PD Group. There was no difference in the various parameters evaluated when the Subgroups (PPPD and SPD) were compared. CONCLUSION: For long-term pancreaticoduodenectomy, the gastrointestinal symptoms are minimal and the patients had the clinical and nutritional status preserved, regardless of pylorus preservation.

OBJETIVO: Avaliar o estado nutricional de pacientes em pós-operatório tardio de pancreaticoduodenectomia (PD) e comparar a evolução de acordo com a preservação de piloro (PPPD) ou pela técnica padrão com ressecção do piloro (SPD). MÉTODOS: O estudo prospectivo foi conduzido com pacientes submetidos à PD após período mínimo de 12 meses (Grupo PD, n=15) e voluntários saudáveis (Grupo Controle, n=15). Numa análise posterior, o Grupo PD foi dividido em Subgrupo PPPD (n=9) e Subgrupo SPD (n=6), de acordo com a técnica de PD. Foram avaliadas as queixas digestivas, o estado nutricional e dados bioquímicos; a análise estatística foi realizada por meio do teste t-Student ou Mann-Whitney. RESULTADOS: Os pacientes recuperaram o estado nutricional e as queixas gastrointestinais foram incomuns. A ingestão protéica e energética foi maior no Grupo PD, apesar do menor IMC. Não houve diferenças em relação aos exames laboratoriais, exceto pelos maiores níveis de glicemia, fosfatase alcalina sérica e proteína C-reativa no Grupo PD. Quando os Subgrupos PPPD e SPD foram comparados, não houve diferenças nos diversos parâmetros analisados. CONCLUSÃO: No pós-operatório tardio de pancreaticoduodenectomia, os sintomas gastrointestinais são mínimos e o estado clínico e nutricional é adequado, independente da preservação do piloro.

Fatores de risco, achados clínicos, laboratoriais e avaliação terapêutica em 36 bovinos com deslocamento de abomaso / Risk factors, clinical and laboratorial findings and therapeutic evaluation in 36 cattle with abomasal displacement

A contínua seleção genética para maior produção de leite em conjunto com o aumento da capacidade digestiva e profundidade corporal aumentou a susceptibilidade à ocorrência de abomasopatias, incluindo o deslocamento do abomaso. Este trabalho objetivou realizar um estudo retrospectivo sobre o deslocamento de abomaso em 36 bovinos atendidos na Clínica de Bovinos, Campus Garanhuns da Universidade Federal Rural de Pernambuco, durante o período de janeiro de 2000 a fevereiro de 2009. Foram diagnosticados 27 casos de deslocamento do abomaso à direita, seis casos de deslocamento do abomaso à esquerda e três casos de vólvulo abomasal. Onze casos considerados moderados, sem grave distensão abdominal, apetite presente para a forragem e delimitação de som metálico até o 8º espaço intercostal, foram tratados clinicamente; enquanto 20 casos com distensão abdominal moderada a severa, associada a distúrbios sistêmicos, foram considerados graves e tratados cirurgicamente. Duas vacas foram eutanasiadas devido peritonite difusa ou alterações graves na serosa do abomaso, totalizando 18 animais submetidos ao tratamento cirúrgico. Dois animais foram encaminhados para abate e três vacas chegaram prostradas e morreram sem receber nenhum tratamento. A análise dos fatores de risco identificou a estação chuvosa como estatisticamente significativa. O maior número de deslocamento do abomaso ocorreu em vacas mestiças com 24 casos (66,6 por cento), seguida por bovinos da raça Holandesa com 11 (30,5 por cento) e Gir com um (2,9 por cento) caso. A composição da alimentação oferecida variou bastante e caracterizou-se por conter excesso de carboidratos e, na maioria dos casos, fibra de baixa qualidade. Os sinais clínicos mais frequentes foram comportamento apático, desidratação, timpanismo ruminal leve a severo com motilidade ausente ou diminuída, som de líquido ao balotamento do flanco direito, som de chapinhar metálico e/ou observação de uma estrutura similar a uma víscera...

The continuous genetic selection for high milk production in association with greater digestive capacity and corporal depth increases the susceptibility for abomasopathies including abomasal displacement. The present work aimed to accomplish a retrospective study on abomasal displacement in 36 cattle attended at Bovine Clinic, Garanhuns Campus, Federal Rural University of Pernambuco, through January 2000 to February 2009. Twenty seven cases of right abomasal displacement, six cases of left abomasal displacement and three of abomasal volvulus were diagnosed. Eleven moderate cases, without severe abdominal distention, appetite for roughage and metallic sound (ôpingõ) reaching at the most the 8th intercostal space were treated conservatively, and 20 severe cases with moderate to severe abdominal distention associated to systemic disturbances were treated surgically. Two cows were euthanized due to diffuse peritonitis or severe alterations in the abomasal serosa totalizing 18 animals submitted to the surgical treatment. Two animals were slaughtered and three cows arrived prostrated and died without receiving any treatment. Risk factor analysis identified rainy season as statistically significant. The greater number of abomasal displacement was in crossbred cows with 24 cases (66.6 percent), followed by Holstein and Gir cattle with 11 (30.5 percent) and one (2.9 percent) cases, respectively. Food composition varied greatly and characterized by excess of carbohydrates and in most cases low quality fibers. Most frequent clinical signs were apathy, dehydration, light to severe ruminal bloat with reduced or absent motility, splashing sound during right flank ballottement, ping and a distended viscera-like structure in the side of the displacement; liquid, blackish and fetid feces. Hematology reveals leukocytosis with neutrophilia and hyperfibrinogenemia in most cases. Ruminal fluid analysis showed compromised flora and fauna dynamics and increased...

The use of pyloric exclusion for treating duodenal trauma: case series / Exclusão pilórica no tratamento do trauma duodenal: série de casos

CONTEXT AND OBJECTIVES: Significant controversy exists regarding the best surgical treatment for complex duodenal injuries. The aims of this study were to report on a series of eight cases of duodenal repairs using pyloric exclusion and to describe reported complications or improvements in clinical outcomes among patients with complex duodenal trauma. DESIGN AND SETTING: Cross-sectional study followed by a case series in a university hospital. METHODS: Data on eight patients with duodenal trauma who underwent pyloric exclusion over a 17.5 year period were collected and analyzed. RESULTS: The causes of the injuries included penetrating gunshot wounds (GSW) in five patients and motor vehicle accidents (blunt trauma) in three patients. The time elapsed until surgery was longer in the blunt trauma group, while in one patient, the gunshot injury was initially missed and thus the procedure was carried out 36 hours after the original injury. The injuries were grade III (50 percent) or IV (50 percent) and the morbidity rate was 87.5 percent. Four patients (50 percent) died during the postoperative period from complications, including hypovolemic shock (one patient), sepsis (peritonitis following the missed injury) and pancreatitis with an anastomotic fistula (two patients). CONCLUSIONS: Pyloric exclusion was associated with multiple complications and a high mortality rate. This surgical technique is indicated for rare cases of complex injury to the duodenum and the surgeon should be aware that treatment with a minimalistic approach, with only primary repair, may be ideal.

CONTEXTO E OBJETIVOS: Há controvérsias a respeito do melhor tratamento cirúrgico para as lesões duodenais complexas. O objetivo deste estudo é relatar uma série de oito casos de reparo duodenal utilizando a exclusão pilórica e descrever a evolução dos pacientes com trauma duodenal complexo submetidos a este procedimento. TIPO DE ESTUDO E LOCAL: Estudo transversal e descrição de série de casos em hospital universitário. MÉTODOS: Foram coletadas e analisadas as informações de oito pacientes com trauma duodenal submetidos à exclusão pilórica em um período de 17,5 anos. RESULTADOS: Os mecanismos de trauma envolvidos foram ferimentos por projétil de arma de fogo em cinco pacientes e acidente automobilístico em três pacientes. O atraso do tratamento cirúrgico foi maior nos pacientes vítimas de trauma fechado, e em um paciente a lesão pelo projétil passou despercebida, sendo o procedimento cirúrgico realizado em nova laparotomia após 36 horas. As lesões duodenais encontradas foram grau III (50 por cento) ou grau IV (50 por cento), e a taxa de morbidade foi de 87,5 por cento. Quatro pacientes (50 por cento) morreram durante o período pós-operatório, de complicações como choque hipovolêmico (um caso), sepse (peritonite por ferimento não identificado), ou pancreatite associada à fístula da anastomose (dois casos). CONCLUSÕES: A exclusão pilórica esteve associada à alta taxa de morbimortalidade. Esta técnica cirúrgica deve ser indicada em poucos casos de lesão complexa de duodeno e o cirurgião deve saber que, frente a uma lesão duodenal, a sutura primária pode ser o melhor tratamento.

Standard whipple's operation versus pylorus preserving pancreaticoduodenectomy: a randomized controlled trial study.

OBJECTIVE: A single-institution randomized controlled trial was conducted to compare the results of standard whipple operation (SW) with those of pylorus-preserving pancreaticoduodenectomy (PPPD). MATERIAL AND METHOD: Between January 2000 and December 2004, 27 patients with pancreatic or periampullary adenocarcinoma were enrolled into the study. All patients were randomly allocated to either a SW or a PPPD resection. Patients' characteristics, postoperative mortality and morbidity, and survival up to two years were compared. RESULTS: There were no significant differences in baseline characteristics between the two groups of patients. There were also no significant differences in blood loss and operative time. Delayed gastric emptying (DGE) occurred more frequently in the PPPD group, but other operative complications, hospital mortality, and the length of hospital stay were similar for the two groups. There were no significant survival differences at two years after operation. CONCLUSIONS: SW and PPPD were comparable in terms of operation time, blood loss, operative mortality and morbidity, and survival. Although the incidence of DGE was higher in the PPPD group, the hospital stay was similar for both groups. Both surgical procedures were equally effective for the treatment of pancreatic and periampullary carcinoma.

[Intragastric effect of Elaeagnus angustifolia L. fruit on gastric acid secretion in a rat pylorus - ligated model]

It has been clearly documented that Elaegnaceae have a variety of medicinal uses including anti-ulcerogenic activity. We therefore hypothesized that Elaeagnus angustifulia L. [E. A.] fruit might be involved in the control of stimulated gastric acid secretion. To address this question, we investigated the pharmacological effect of the E. A. fruit extract on carbachol-induced acid secretion in a pylorus-ligated rat. In this study we used pylorus ligation method. Briefly, animals were anesthetized and two cannulas were introduced into the stomach through esophagus to inject drug and pylorododenal junction to collect the stomach juice. Carbachol or histamine was infused into jugular vein and gastric juice was collected in 10-min periods to titrate with NaOH 0.01 N. Our results showed that the E. A. fruit extract dose and time dependently decreased the carbachol- [but not histamine-] stimulated gastric acid secretion when it administered at increased steady level [at 30 minute] of carbachole time-course curve. Stimulated acid secretion was completely suppressed at a dose 600 mg/kg 30 min after drug administration and this inhibitory effect persisted up to the end of experiments [100 min]. Using E.A. fruit extract simultaneously with carbachol infusion had no effect on acid secretion. These results suggested that E.A. fruit has a pH-dependent anti-secretory action on cholinergic-stimulated gastric acid secretion by intragastric administration. It is likely that the inhibitory effect is mediated by cholinergic nervous system and/or non-neuronal membranes

Exclusión pilórica en lesión duodeno-pancreática combinada: reporte de 2 casos / Pyloric exclusion for traumatic duodenal and pancreatic lesions: report of two cases

Introducción: Las lesiones traumáticas de duodeno y páncreas constituyen una entidad quirúrgica de tratamiento difícil, especialmente, si se trata de trauma combinado. Debido a su ubicación retroperitoneal; afortunadamente, las injurias de estos órganos no son frecuentes. Objetivo: Proporcionar conocimientos actualizados sobre el diagnóstico y manejo de las lesiones duodeno-pancreáticas combinadas con énfasis en la exclusión pilórica como método de tratamiento quirúrgico. Sede: Hospital de segundo nivel de atención. Diseño: Presentación de 2 casos clínicos: caso 1: paciente varón, con trauma cerrado de abdomen; y, caso 2: paciente varón, con trauma penetrante de abdomen por arma de fuego. Resultados: Los dos pacientes fueron sometidos a una laparotomía exploradora, realizándose la exclusión pilórica, con rafia duodenal, gastrostomía, yeyunostomía; acompañados de pancreatectomía distal en el caso 1 y colecistectomía en el caso 2. En este último, se presentó una complicación séptica: un absceso pancreático que involucró el colon transverso, tratándose mediante laparostomía y hemicolectomía derecha e ileostomía. La estancia hospitalaria fue de 33 días (caso 1) y 97 días (caso 2). Conclusiones: El presente artículo pretende comunicar una conducta para el cirujano que enfrenta este tipo de trauma, analizando la técnica de la exclusión pilórica.

Due to their retroperitoneal location, traumatic lesions of pancreas and duodenum are difficult to treat. Pyloric exclusion is a therapeutic alternative for these lesions. We report a 22 years old male with a blunt abdominal trauma and a 23 years old male with a gunshot abdominal wound. Both were operated, performing a pyloric exclusion, with duodenal suture, gastrostomy and jejunostomy. A distal pancreatectomy was performed in the first patient a cholecystectomy in the second. The latter had a pancreatic abscess that involved transverse colon as complication. He was treated with a laparostomy, hemicolectomy and ileostomy. Hospital stays were 33 and 97 days in each case.

Does troncular vagotomy modify the proliferative gastric lesions induced in rats by duodenogastric reflux

PURPOSE: to investigate if combining VT to DGR through the pylorus can modulate the biological behavior of PL induced by DGR and to verify if TV alone can induce morphologic lesions in the gastric mucosa. METHODS: 62 male Wistar rats were assigned to four groups: 1 - Control (CT) gastrotomy; 2 - Troncular Vagotomy (TV) plus gastrotomy; 3 - Duodenogastric reflux through the pylorus (R) and 4 - Troncular vagotomy plus DGR (RTV). The animals were killed at the 54 week of the experiment. DGR was obtained by anastomosing a proximal jejunal loop to the anterior gastric wall. TV was performed through isolation and division of the vagal trunks. Gastrotomy consisted of 1 cm incision at the anterior gastric wall. PL were analyzed gross and histologically in the antral mucosa, at the gastrojejunal stoma and at the squamous portion of the gastric mucosa. RESULTS: Groups R and RTV developed exophytic lesions in the antral mucosa (R=90.9 percent; RTV=100 percent) and at the gastrojejunal stoma (R=54.54 percent; RTV=63.63 percent). Histologically they consisted of proliferative benign lesions, without cellular atypias, diagnosed as adenomatous hyperplasia. Both groups exposed to DGR presented squamous hyperplasia at the squamous portion of the gastric mucosa (R= 54.5 percent; RTV= 45.4 percent). TV, alone, did not induce gross or histological alterations in the gastric mucosa. TV did note change the morphologic pattern of the proliferative lesions induced by DGR. CONCLUSIONS: DGR induces the development of PL in the pyloric mucosa and at the gastrojejunal stoma. TV does not change the morphologic pattern of the proliferative lesions induced by DGR. TV alone is not able to induce morphologic lesions in the gastric mucosa.

OBJETIVO: investigar se a adição da VT ao RDG através do piloro, interfere no comportamento biológico das LP induzidas pelo RDG e observar se a VT isoladamente leva ao desenvolvimento de lesões morfológicas na mucosa gástrica. MÉTODOS: Foram utilizados 62 ratos Wistar machos, distribuídos em quatro grupos experimentais: 1- Controle (CT) Gastrotomia; 2- Vagotomia Troncular + gastrotomia (VT); 3-Refluxo duodeno-gástrico (R) e 4- RDG através do piloro e VT (RTV). Os animais foram sacrificados na 54ª semana do experimento. O RDG foi obtido através de anastomose do jejuno proximal com a parede gástrica anterior. A vagotomia troncular foi realizada através da dissecção e divisão dos troncos vagais. A gastrotomia consistiu de secção e síntese de um cm na parede gástrica anterior. As LP foram analisadas macroscopicamente e histologicamente na mucosa gástrica, na anastomose gastrojejunal e no estômago escamoso. RESULTADOS: Os grupos R e RVT desenvolveram lesões exofíticas na mucosa do antro gástrico (R=90,9 por cento e RVT=100 por cento) e na anastomose gastrojejunal (R=54,5 por cento e RVT=63,6 por cento) que se caracterizaram no exame histológico por lesões proliferativas epiteliais benignas, sem atipias celulares, diagnosticadas como hiperplasia adenomatosa. Na região do estômago escamoso, ambos os grupos expostos ao RDG apresentaram hiperplasia escamosa (R= 54,5 por cento e RVT= 45,4 por cento). A VT não modificou o padrão histopatológico das LP induzidas pelo RDG. Os grupos VT e CT não apresentaram alterações macroscópicas ou histológicas significativas. CONCLUSÕES: o RDG induz o desenvolvimento de lesões proliferativas (LP) benignas na mucosa do antro gástrico e na anastomose gastrojejunal. A VT isoladamente não induz alterações proliferativas na mucosa gástrica e não modifica as características morfológicas das LP induzidas pelo RDG através do piloro.

Pyloric atresia associated with epidermolysis bullosa: a report of 4 survivals in 5 cases

Pyloric atresia [PA] is a rare congenital anomaly that constitutes approximately 1% of all intestinal atresias, and its incidence is approximately 1 in 100,000 live births. PA may occur as an isolated condition or associated with other abnormalities, the most common being junctional epidermolysis bullosa [EB]. Evidence suggests that PA-EB is a distinct entity. In this report, we present 5 cases of pyloric atresia associated with Junctional epidermolysis bullosa, 4 of whom survived after surgery. Prospective evaluation of 5 patients with pyloric atresia associated with Epidermolysis bullosa undergoing therapeutic surgery. Biopsy of the fresh bulla was compatible with Junctional EB in all 5 patients. All patients underwent laparatomy after stabilization. Four neonates underwent gastroduodenostomy, and one patient had excision of membrane and pyloroplasty. Out of 5 neonates, 4 survive and one died from fulminant septicemia 12 days after operation. Although association of PA with EB has been reported to be fatal, recently there have been encouraging reports of survival among these patients. These 5 patients underwent surgery and survived, and are doing well on follow up

Piloromiotomía laparoscópica: tratamiento de estenosis hipertrófica del píloro / Laparoscopic pyloromyotomy treatment of hipertrophic pyloric stenosis

Introducción: la estenosis hipertrófica del píloro es una condición común de la infancia. El tratamiento convencional consiste en realizar una piloromiotomía a través de una incisión en el cuadrante superior derecho del abdomen. El desarrollo de la cirugía videolaparoscópica nos ha permitido realizar este procedimiento, ofreciendo los mismos resultados que la técnica tradicional. Material y métodos: en la Sección de Cirugía Pediátrica del Hospital Roosevelt se han realizado 10 piloromiotomías videolaparoscópicas en los últimos tres meses. El procedimietno se realiza a través de tres puertos de cinco milímetros, localizados en el ombligo...

Gastric proliferative lesions induced by duodenogastric reflux in rats

OBJETIVO: Avaliar as lesões proliferativas que se desenvolvem na mucosa gástrica de ratos Wistar após modelo específico de refluxo duodeno-gástrico.MÉTODOS: Foram utilizados 75 ratos adultos machos divididos em três grupos experimentais: o grupo I (controle) submetido a gastrotomia na parede posterior do estômago glandular (25 animais); o grupo II (RDG), foi submetido a gastrojejunoanastomose látero-lateral na parede posterior do estômago glandular (25 animais) e o grupo III (RDG-P) submetido a gastrojejunoanastomose látero-lateral na parede posterior do estômago glandular, com secção e fechamento da alça (25 animais). Os animais foram observados durante 36 semanas, após o que foram realizados estudos macroscópicos e microscópicos da anastomose gastrojejunal, da região pré-pilórica e região escamosa do estômago. RESULTADOS: Os animais do Grupo I não apresentaram nenhum tipo de lesão. No grupo II observou-se 40% de lesões do tipo hiperplasia adenomatosa na anastomose e 12% de hiperplasia escamosa. No grupo III obteve-se 40% de hiperplasia adenomatosa na mucosa pré-pilórica, 72 % de hiperplasia adenomatosa na mucosa da anastomose, 20% de hiperplasia escamosa e 12 % de adenocarcinoma. CONCLUSÕES: O refluxo duodeno-gástrico induz a alta freqüência de lesões proliferativas na mucosa adjacente à anastomose gastrojejunal ou na mucosa pré-pilórica e o adenocarcinoma é um evento raro neste modelo experimental.

Patologia adquirida gastroduodenal: duplo piloro - Relato de caso e revisão da literatura / Acquired gastroduodenal pathology: double pylorus - Case report and literature review

O duplo piloro é uma rara condição em que há uma dupla comunicação gastroduodenal, que pode ser congênita ou adquirida, como uma complicação da doença ulcerosa péptica. Os autores relatam um caso de duplo piloro adquirido com o objetivo de elucidar tal patologia e suas características

Hypertrophic pyloric stenosis: a 331 cases report

Hypertrophic pyloric stenosis [HPS] is a frequent infant disease. Its diagnosis is very easy, based on its classical clinical features and ultrasonography. The aim of this study is to evaluate the management of HPS in the Paediatric Surgery Department of Casablanca over a period of 25 years [1977-2002]. We recorded 331 cases and we compared the management of this pathology before and after 1992. The mean age of diagnosis was 52 day-old before 1992 and 34 day-old after 1992. The diagnosis was based on oesophago-gastric barium swallow before 1992, and only on abdominal ultrasonography after. The surgical incision is umbilical since 1992. Death rates decreased from 8% to 2%, showing improvement of the management of HPS since 1992. This improvement can be achieved through an earlier diagnosis and an adequate medical care before surgery

Confecção de piloros artificiais em íleo terminal sem secção de musculatura em ratos: estudo anátomo-patológico / Confection of artificial pylori with no section of musculature in terminal bowel in rats: anatomo-pathological study

O trânsito intestinal acelerado pode acarretar problemas clínicos graves e seu controle, às vezes, é difícil de se obter. Objetivo: visando estudar a diminuição do trânsito intestinal foram confeccionados quatro piloros artificiais no íleo terminal, sem secção de musculatura entérica. Método: o estudo foi realizado em 40 ratos distribuídos em dois grupos de 20 animais cada. Foram confeccionados quatro piloros no íleo terminal de cada animal, com pontos sero-musculares separados, distribuídos circunferencialmente na alça intestinal. O Grupo 1 foi morto com 15 dias e o Grupo 2, com 30 dias. Aferimos as medidas de circunferência do intestino no transoperatório e no momento da necropsia. Resultados: no Grupo 1 houve dilatação média de 3mm no nível do primeiro piloro e de 4,15mm no quarto piloro. No Grupo 2 a dilatação média foi de 7,50mm no primeiro piloro e de 5,75mm no quarto piloro. No estudo anátomo-patológico ficou evidente a formação bem definida dos piloros. Conclusão: não é necessário, pois, remover ou seccionar a musculatura do intestino delgado, nem a secção do plexo nervoso próprio do intestino, para promover a dilatação intestinal com esse método e, como consequência, diminuir o trânsito intestinal.