Underwater endoscopic mucosal resection of adenomas and colorectal serrated lesions: a prospective clinical study.

BACKGROUND: Underwater endoscopic mucosal resection (UEMR) without submucosal injection has been described as an alternative technique to the endoscopic resection of adenomas and colorectal serrated lesions. We aimed to assess the feasibility, safety, and efficacy of UEMR in a Brazilian setting. METHODS: This was a prospective observational study of consecutive patients who underwent UEMR between January and July 2019, in a single tertiary care center. Inclusion criteria were lesions without endoscopic stigmata of deep submucosal invasion in patients referred for endoscopic resection of colorectal adenomas, and serrated lesions detected in a previous colonoscopy. The following features were assessed: complete resection rate, en bloc resection rate, resection time, adverse events, and resection infeasibility. RESULTS: A total of 36 patients underwent UEMR for 51 colorectal lesions. The mean/median lesion size was 16.24/13 mm and the mean/median resection time was 16.97/9.19 min. Histopathology revealed the following: tubular adenoma (43.1%), tubulovillous adenoma (13.7%), serrated lesions (41.2%), and intramucosal adenocarcinoma (2%). Complete resection was achieved in 86.3% of cases; 52.9% of the lesions were removed en bloc, while 47.1% were resected in a piecemeal fashion. UEMR was feasible in 96.1% of cases and failed on 2 occasions, requiring conversion to standard endoscopic mucosal resection. Minor intraoperative bleeding occurred in 5 patients (9.8%) and only 1 presented with delayed bleeding (2%), all controlled endoscopically. CONCLUSION: UEMR for removal of adenomas and colorectal serrated lesions was demonstrated to be feasible, safe and effective.

Helicobacter pylori and t(11;18)(q21;q21) translocation in gastric malt lymphoma.

CONTEXT: Gastric mucosa-associated lymphoid tissue (MALT) lymphoma is clearly associated with Helicobacter pylori gastritis and can be cured with anti- H pylori therapy alone. The presence of t(11;18)(q21;q21) translocation is thought to predict a lower response rate to anti- H pylori treatment. OBJECTIVES: To study the presence of t(11;18)(q21;q21) genetic translocation and its clinical impact in low-grade gastric MALT lymphoma Brazilian patients. METHODS: A consecutive series of eight patients with gastric MALT lymphoma were submitted to gastroscopy, endoscopic ultrasound, histopathological examination, H pylori search and RT-PCR-based methodology. All patients received anti-H pylori treatment. Eradicated patients were followed-up every 3-6 months for 2 years. RESULTS: Eight patients were studied. All patients had tumor involvement restricted to the mucosa or submucosa and seven patients had low-grade gastric MALT lymphoma. All infected patients achieved H pylori eradication. Histological tumor regression was observed in 5/7 (71%) of the low-grade gastric MALT lymphoma patients. The presence of t(11;18)(q21;q21) translocation was found in 4 (57%) of these patients; among them only two had histological tumor regression following H pylori eradication. CONCLUSIONS: RT-PCR is a feasible and efficient method to detect t(11;18)(q21;q21) translocation, being carried out in routine molecular biology laboratories. The early detection of such translocation can be very helpful for better targeting the therapy to be applied to gastric MALT lymphoma patients.

HELICOBACTER PYLORI AND t(11;18)(q21;q21) TRANSLOCATION IN GASTRIC MALT LYMPHOMA / Helicobacter pylori e presença de translocação t(11;18)(q21;q21) em pacientes portadores de linfoma MALT gástrico

Context Gastric mucosa-associated lymphoid tissue (MALT) lymphoma is clearly associated with Helicobacter pylori gastritis and can be cured with anti- H pylori therapy alone. The presence of t(11;18)(q21;q21) translocation is thought to predict a lower response rate to anti- H pylori treatment. Objectives To study the presence of t(11;18)(q21;q21) genetic translocation and its clinical impact in low-grade gastric MALT lymphoma Brazilian patients. Methods A consecutive series of eight patients with gastric MALT lymphoma were submitted to gastroscopy, endoscopic ultrasound, histopathological examination, H pylori search and RT-PCR-based methodology. All patients received anti-H pylori treatment. Eradicated patients were followed-up every 3-6 months for 2 years. Results Eight patients were studied. All patients had tumor involvement restricted to the mucosa or submucosa and seven patients had low-grade gastric MALT lymphoma. All infected patients achieved H pylori eradication. Histological tumor regression was observed in 5/7 (71%) of the low-grade gastric MALT lymphoma patients. The presence of t(11;18)(q21;q21) translocation was found in 4 (57%) of these patients; among them only two had histological tumor regression following H pylori eradication. Conclusions RT-PCR is a feasible and efficient method to detect t(11;18)(q21;q21) translocation, being carried out in routine molecular biology laboratories. The early detection of such translocation can be very helpful for better targeting the therapy to be applied to gastric MALT lymphoma patients. .

Contexto A patogênese do linfoma MALT (tecido linfoide associado à mucosa) gástrico, também conhecido como linfoma de zona marginal de células B, está claramente associada à gastrite por infecção pelo Helicobacter pylori e, a maioria desses tumores pode ser curada apenas com a erradicação da bactéria. A presença da translocação t(11;18)(q21;q21) tem sido identificada como a anomalia citogenética mais comum do linfoma MALT gástrico e sua presença pode prever uma menor taxa de resposta ao tratamento anti-H pylori. Objetivos Estudo da translocação genética t(11;18)(q21;q21) e seu impacto na evolução clínica de pacientes portadores de linfoma MALT gástrico de baixo grau. Métodos Uma série consecutiva de oito pacientes com linfoma MALT gástrico foi submetida à endoscopia digestiva, ultra-sonografia endoscópica, exame histopatológico, pesquisa do H pylori e metodologia rotineira de transcrição reversa seguida de reação em cadeia da polimerase (RT-PCR) utilizando primers específicos para API2-MALT1. Todos os pacientes receberam tratamento anti-H pylori e retratamento, quando necessário. Após a erradicação, exames endoscópicos foram realizados a cada 3-6 meses durante 2 anos para acompanhamento da evolução do tumor. Resultados Foram estudados oito pacientes (seis mulheres, idade média: 57 anos). Todos apresentavam à ecoendoscopia envolvimento tumoral restrito à mucosa ou submucosa com aparência endoscópica variável. A histologia mostrou que sete pacientes tinham linfoma MALT gástrico de baixo grau e um de alto grau. A erradicação do H pylori foi obtida em todos os pacientes, embora a bactéria não tenha sido identificada em um deles. Foi observada regressão histológica ...

Complementação por coagulação com plasma de argônio após a ressecção endoscópica completa pela técnica de fatiamento para grandes adenomas colorretais / Complementation by argon plasma coagulation after endoscopic piecemeal resection of large colorectal adenomas

OBJETIVO: avaliar a eficácia da complementação por coagulação com plasma de argônio para reduzir a taxa de neoplasia residual ou recorrente após ressecção endoscópica completa fragmentada de grandes adenomas sésseis colorretais. MÉTODOS: critérios de inclusão: pacientes com grandes adenomas colorretais sésseis, > 20mm, sem sinais morfológicos de infiltração profunda, submetidos à ressecção endoscópica completa fragmentada estudada com cromoendoscopia e magnificação de imagens. Os pacientes foram randomizados em dois grupos: grupo 1 - nenhum procedimento adicional e, grupo 2 - complementação por coagulação com plasma de argônio. O seguimento por colonoscopia foi realizado em três, seis e 12 meses de pós-operatório. Foi avaliada a taxa de neoplasia residual ou recidiva local. RESULTADOS: foram incluídos no estudo um total de 21 lesões. Onze lesões no grupo 1 e dez no grupo 2. Ocorreram duas neoplasias residuais ou recorrências locais em cada grupo, detectadas em três meses de acompanhamento. CONCLUSÃO: a complementação por coagulação com plasma de argônio após uma aparente ressecção endoscópica completa em fragmentos de grandes adenomas sésseis colorretais não parece reduzir a ocorrência de lesão adenomatosa residual ou recidiva local.

OBJECTIVE: To evaluate the efficacy of complement by argon plasma coagulation to reduce the rate of residual or recurrent tumor after complete endoscopic piecemeal resection of large sessile colorectal adenomas. METHODS: Inclusion criteria: patients with large sessile colorectal adenomas (e" 20 mm), without morphological signs of deep infiltration, submitted to complete endoscopic piecemeal resection studied with chromoendoscopy and magnification of images. Patients were randomized into two groups: group 1 - no additional procedure, and group 2 - complementation by argon plasma coagulation. follow-up colonoscopy was performed at three, six and 12 months postoperatively. We evaluated the rate of local recurrence or residual malignancy. RESULTS: The study included 21 patients, eleven in group 1 and ten in group 2. There were two local recurrences or residual tumors in each group, detected at three months follow-up. CONCLUSION: Complementation by argon plasma coagulation after apparent complete endoscopic piecemeal resection of large sessile colorectal adenomas does not seem to reduce the occurrence of residual adenomatous lesions or local recurrence.

Initial experience of endoscopic submucosal dissection in Brazil to treat early gastric and esophagheal cancer: a multi-institutional analysis.

OBJECTIVE: This study aimed to evaluate the feasibility and clinicopathological characteristics of early gastric and esophageal cancers treated with endoscopic submucosal dissection (ESD) at five centers in Brazil. METHODS: Five centers in Brazil reported their initial experience with ESD. The cases reported had already been collected by each center before pooled analysis. RESULTS: Were resected 62 gastric lesions; 52(83,8%) of the gastric lesions were well-differentiated adenocarcinoma, 31(50%) from the antrum, 24 (38.7%) type IIa. 51 (82.2%) lesions had en-block resection with three showing lateral margin compromise. Concerning invasion, 25 (40.3%) tumors were M1. Mean tumor diameter was 18.9 mm (range, 0.6-5.0 cm) and mean procedure duration was 119.45 minutes. Gastric perforation occurred in three (4.8%) patients. Mean follow-up duration was 11.3 months, with two local recurrences and one death from pneumonia Seven months after treatment. Of the 16 esophageal lesions resected, 14 (87.4%) were squamous cell carcinoma, 10 (62.5%) were located proximally and 8 (50.0%) type IIa. Mean tumor diameter was 23.8 mm (range, 6-60 mm). Thirteen (81.2%) lesions had en-block resection with five cases of lateral margin compromise. Eight (50.0%) lesions were M1. Mean procedure duration was 78 minutes (range, 20-150 min). Complications included pneumomediastinum in two (12.5%) patients and stenosis in one (6.2%). Mean duration of follow-up was 8.6 months, with no local recurrence despite the presence of lateral margin compromise. CONCLUSION: Different centers in Brazil feasibly perform ESD with a high success rate.

INITIAL EXPERIENCE OF ENDOSCOPIC SUBMUCOSAL DISSECTION IN BRAZIL TO TREAT EARLY GASTRIC AND ESOPHAGHEAL CANCER: a multi-institutional analysis

Objective This study aimed to evaluate the feasibility and clinicopathological characteristics of early gastric and esophageal cancers treated with endoscopic submucosal dissection (ESD) at five centers in Brazil. Methods Five centers in Brazil reported their initial experience with ESD. The cases reported had already been collected by each center before pooled analysis. Results Were resected 62 gastric lesions; 52(83,8%) of the gastric lesions were well-differentiated adenocarcinoma, 31(50%) from the antrum, 24 (38.7%) type IIa. 51 (82.2%) lesions had en-block resection with three showing lateral margin compromise. Concerning invasion, 25 (40.3%) tumors were M1. Mean tumor diameter was 18.9 mm (range, 0.6-5.0 cm) and mean procedure duration was 119.45 minutes. Gastric perforation occurred in three (4.8%) patients. Mean follow-up duration was 11.3 months, with two local recurrences and one death from pneumonia Seven months after treatment. Of the 16 esophageal lesions resected, 14 (87.4%) were squamous cell carcinoma, 10 (62.5%) were located proximally and 8 (50.0%) type IIa. Mean tumor diameter was 23.8 mm (range, 6-60 mm). Thirteen (81.2%) lesions had en-block resection with five cases of lateral margin compromise. Eight (50.0%) lesions were M1. Mean procedure duration was 78 minutes (range, 20-150 min). Complications included pneumomediastinum in two (12.5%) patients and stenosis in one (6.2%). Mean duration of follow-up was 8.6 months, with no local recurrence despite the presence of lateral margin compromise. Conclusion Different centers in Brazil feasibly perform ESD with a high success rate. .

Objectivo Este estudo tem como objetivo avaliar a viabilidade da técnica de dissecção endoscópica da submucosa (DES) no tratamento do câncer precoce do estômago e do esôfago, assim como as características clinicopatológicas dos pacientes tratados em diferentes centros no Brasil. Métodos Cinco centros no Brasil relataram sua experiência inicial com a técnica de DES. Os casos relatados vinham sendo coletados em cada serviço antes da análise agrupada dos dados. Resultados Foram ressecadas 62 lesões gástricas, sedo 52 (83,8%) adenocarcinoma bem diferenciado, 31 (50%) localizadas no antro e 24 (38.7%) do tipo macroscópico IIa. Foram ressecadas em monobloco 51 (82.2%) lesões, com 3 apresentando margem lateral comprometida. Quanto ao grau de invasão, 25 (40.3%) eram restritas ao epitélio da mucosa (M1). O diâmetro médio das lesões foi de 18.9 (6-50) mm, o tempo médio dos procedimentos foi de 119.45 minutos. A incidência de perfuração gástrica foi de 4,8% (três casos). O tempo médio de seguimento foi de 11.3 meses, com duas recorrências locais e uma morte por pneumonia 7 meses após o tratamento. Das 16 lesões esofágicas ressecadas, 14 (87.4%) eram carcinoma epidermóide, 10 (62.5%) localizados na porção proximal, 8 (50.0%) do tipo macroscópico IIa. O diâmetro médio das lesões foi de 23.8 (6-60) mm. Foram ressecadas em monobloco 13 (81.2%) lesões, sendo que 5 apresentaram margem lateral comprometida e 8 (50.0%) com invasão restrita a camada epitelial (M1). A duração média dos procedimentos foi de 78 (20-150) minutos. Dois (12.5%) pacientes tiveram pequeno pneumomediastino e um (6.2%) evoluiu com estenose esofágica. O tempo médio de seguimento foi de 8.6 meses, ...

Complementation by argon plasma coagulation after endoscopic piecemeal resection of large colorectal adenomas.

OBJECTIVE: To evaluate the efficacy of complement by argon plasma coagulation to reduce the rate of residual or recurrent tumor after complete endoscopic piecemeal resection of large sessile colorectal adenomas. INCLUSION CRITERIA: patients with large sessile colorectal adenomas (e" 20 mm), without morphological signs of deep infiltration, submitted to complete endoscopic piecemeal resection studied with chromoendoscopy and magnification of images. Patients were randomized into two groups: group 1 - no additional procedure, and group 2 - complementation by argon plasma coagulation. follow-up colonoscopy was performed at three, six and 12 months postoperatively. We evaluated the rate of local recurrence or residual malignancy. RESULTS: The study included 21 patients, eleven in group 1 and ten in group 2. There were two local recurrences or residual tumors in each group, detected at three months follow-up. CONCLUSION: Complementation by argon plasma coagulation after apparent complete endoscopic piecemeal resection of large sessile colorectal adenomas does not seem to reduce the occurrence of residual adenomatous lesions or local recurrence.

Effectiveness of unsedated transnasal endoscopy with white-light, flexible spectral imaging color enhancement, and lugol staining for esophageal cancer screening in high-risk patients.

BACKGROUND AND AIMS: Transnasal endoscopy (TNE) has been proposed to screen for esophageal squamous cell cancer (ESCC) in Asia. This study aimed to assess the feasibility and tolerance of Brazilian patients to undergo unsedated TNE for screening, the prevalence of ESCC in this population, and the effectiveness of white-light endoscopy (WLE) and digital chromoendoscopy [flexible spectral imaging color enhancement (FICE)] to diagnose esophageal neoplasia. PATIENTS AND METHODS: This was a diagnostic test study that enrolled patients with head and neck squamous cell cancer (HNSCC) referred to ESCC screening. Patients' tolerance was rated by a numeric pain intensity scale. Interventions included unsedated TNE with WLE and FICE examination of the esophagus, in a tandem manner with blinded operators, followed by lugol chromoscopy. Performance of WLE and FICE for neoplasia detection was compared with the reference standard (lugol chromoscopy plus histology). RESULTS: A total of 106 patients were recruited. TNE was feasible in 99.1%, and 92% of the patients rated the discomfort as absent or minimal. Thirteen ESCC were detected (12.3%), with 10 early cancers (77%). The tests showed an excellent performance and there was no difference between WLE (sensitivity 92.3%, specificity 98.9%, accuracy 98.1%, area under curve 0.995) and FICE (sensitivity 100%, specificity 98.9%, accuracy 99%, area under curve 0.956) for esophageal neoplasia detection. CONCLUSIONS: Unsedated TNE is a feasible, well accepted, and efficient diagnostic tool for the screening of ESCC. The elevated rate of esophageal neoplasia strengthens the recommendations to screen patients with HNSCC. The yields of WLE and FICE were similar for ESCC detection.

Gastrobronchial fistula after sleeve gastrectomy and gastric bypass: endoscopic management and prevention.

Gastrobronchial fistula (GBF) is a serious complication following bariatric surgery, whose treatment by thoracotomy and/or laparotomy involves a high morbidity rate. We present the outcomes of endoscopic management for GBF as a helpful technique for its healing process. This is a multicenter retrospective study of 15 patients who underwent gastric bypass (n = 10) and sleeve gastrectomy (n = 5) and presented GBF postoperatively (mean of 6.7 months). Ten patients developed lung abscess and were treated by antibiotic therapy (n = 10) and thoracotomy (n = 3). Abdominal reoperation was performed in nine patients for abscess drainage (n = 9) and/or ring removal (n = 4) and/or nutritional access (n = 6). The source of the GBF was at the angle of His (n = 14). Furthermore, 14 patients presented a narrowing of the gastric pouch treated by 20 or 30 mm aggressive balloon dilation (n = 11), stricturotomy or septoplasty (n = 10) and/or stent (n = 7). Fibrin glue was used in one patient. We performed, on average, 4.5 endoscopic sessions per patient. Endotherapy led to a 93.3% (14 out of 15) success rate in GBF closure with an average healing time of 4.4 months (range, 1-10 months), being shorter in the stent group (2.5 × 9.5 months). There was no recurrence during the average 27.3-month follow-up. A patient persisted with GBF, despite the fibrin glue application, and decided to discontinue it. GBF is a highly morbid complication, which usually arises late in the postoperative period. Endotherapy through different strategies is a highly effective therapeutic option and should be implemented early in order to shorten leakage healing time.

Submucosal injection of 0.4% hydroxypropyl methylcellulose facilitates endoscopic mucosal resection of early gastrointestinal tumors.

BACKGROUND AND AIMS: Submucosal injection of a viscoelastic solution prolongs submucosal lift, thus, facilitating endoscopic mucosal resection. Our objective was to assess the safety and clinical effectiveness of 0.4% hydroxypropyl methylcellulose (HPMC) as a submucosal injectant for endoscopic mucosal resection. PATIENTS AND METHODS: A prospective, open-label, multicenter, phase 2 study was conducted at 2 academic institutions in Brazil. Eligible participants included patients with early gastrointestinal tumors larger than 10 mm. Outcomes evaluated included complete resection rates, volume of HPMC injected, duration of the submucosal cushion as assessed visually, histology of the resected leisons, and complication rates. RESULTS: Over a 12-month period, 36 eligible patients with superficial neoplastic lesions (stomach 14, colon 11, rectum 5, esophagus 3, duodenum 3) were prospectively enrolled in the study. The mean size of the resected specimen was 20.4 mm (10 to 60 mm). The mean volume of 0.4% HPMC injected was 10.7 mL (range 4 to 35 mL). The mean duration of the submucosal fluid cushion was 27 minutes (range 9 to 70 min). Complete resection was successfully completed in 89%. Five patients (14%) developed immediate bleeding requiring endoclip and APC application. Esophageal perforation occurred in 1 patient requiring surgical intervention. There were no local or systemic adverse events related to HPMC use over the follow-up period (mean 2.2 mo). CONCLUSION: HPMC solution (0.4%) provides an effective submucosal fluid cushion and is safe for endoscopic resection of early gastrointestinal neoplastic lesions.

Endoscopic repair of a large colonoscopic perforation with clips.

We report a patient with a large colonic perforation that occurred in a screening colonoscopy, successfully repaired with endoclips, although the safety and efficacy of this approach is not entirely established. Endoscopic clip placement can be used to treat iatrogenic colonic perforation, when the defect is readily recognized and is easily accessible for closure, and the bowel preparation is excellent.

Clinical and laboratory predictors of esophageal varices in children and adolescents with portal hypertension syndrome.

OBJECTIVES: To determine the clinical and laboratory parameters that may predict the presence of esophageal varices in children and adolescents with portal hypertension. PATIENTS AND METHODS: Overall, 111 patients with portal hypertension and no previous history of digestive bleeding underwent esophagogastroduodenoscopy for detection of esophageal varices. A univariate analysis initially was carried out, followed by a logistic regression analysis to identify the independent variables associated with the presence of esophageal varices. Sensitivity and specificity rates, positive predictive value, negative predictive value, and the accuracy of the predictive variables identified among cirrhotic patients were calculated with the esophagogastroduodenoscopy as the reference test. RESULTS: Sixty percent of patients had esophageal varices on the first esophagogastroduodenoscopy. Patients with portal vein thrombosis and congenital hepatic fibrosis were 6.15-fold more likely to have esophageal varices than cirrhotic patients. When we analyzed 85 cirrhotic patients alone, splenomegaly and hypoalbuminemia remained significant indicators of esophageal varices. Only spleen enlargement showed appropriate sensitivity and negative predictive value (97.7% and 91.7%, respectively) to be used as a screening test for esophageal varices among cirrhotic patients. CONCLUSIONS: In reference services and research protocols, endoscopic screening should be performed in all patients with portal vein thrombosis and congenital hepatic fibrosis. Among cirrhotic patients, the indication should be conditioned to clinical evidence of splenomegaly or hypoalbuminemia. For clinicians, the recommendation is to emphasize the orientations given to guardians of patients with portal vein thrombosis and congenital hepatic fibrosis as to the risk of digestive bleeding. Cirrhotic patients with hypoalbuminemia and splenomegaly should receive the same orientations.

Endoscopic dilatation of esophageal strictures in children and adolescents.

OBJECTIVE: To assess the causes of esophageal stricture in pediatric patients and their response to endoscopic dilatation. METHODS: Retrospective analysis of clinical and endoscopic data obtained from children and adolescents with esophageal stricture submitted to endoscopic dilatation between July 1993 and January 2003. RESULTS: A total of 125 patients aged between 1 month and 16 years were included in the study. Among the types of stenosis, postoperative (43.2%), corrosive (27.2%) and peptic (21.6%) strictures were the most prevalent. Those patients with corrosive esophageal stricture needed more dilatation sessions. Five cases of esophageal perforation and one case of hemorrhage occurred due to complications during the procedure. Good response to endoscopic treatment was described in 74.4% of cases, but better results were obtained from patients with peptic esophageal stricture. CONCLUSIONS: Endoscopic treatment of esophageal strictures in children and adolescents yields good results and has a low rate of complications. Corrosive esophageal strictures have a higher morbidity and require more dilatation sessions.

Endoscopic dilatation of esophageal strictures in children and adolescents

OBJECTIVE: To assess the causes of esophageal stricture in pediatric patients and their response to endoscopic dilatation.METHODS: Retrospective analysis of clinical and endoscopic data obtained from children and adolescents with esophageal stricture submitted to endoscopic dilatation between July 1993 and January 2003.OBJECTIVE: To assess the causes of esophageal stricture in pediatric patients and their response to endoscopic dilatation.METHODS: Retrospective analysis of clinical and endoscopic data obtained from children and adolescents with esophageal stricture submitted to endoscopic dilatation between July 1993 and January 2003.RESULTS: A total of 125 patients aged between 1 month and 16 years were included in the study. Among the types of stenosis, postoperative (43.2%), corrosive (27.2%) and peptic (21.6%) strictures were the most prevalent. Those patients with corrosive esophageal stricture needed more dilatation sessions. Five cases of esophageal perforation and one case of hemorrhage occurred due to complications during the procedure. Good response to endoscopic treatment was described in 74.4% of cases, but better results were obtained from patients with peptic esophageal stricture.CONCLUSIONS: Endoscopic treatment of esophageal strictures in children and adolescents yields good results and has a low rate of complications. Corrosive esophageal strictures have a higher morbidity and require more dilatation sessions.

Botulinum A toxin injected into the gastric wall for the treatment of class III obesity: a pilot study.

BACKGROUND: Obesity represents a major public health problem in western countries. Initial studies suggest that injection of botulinum A toxin (Btx-A) into the antropyloric region inhibits propulsive contractions of the antral pump, with delay in gastric emptying, early satiety and weight loss. METHODS: After approval by the University Ethics Committee, we prospectively evaluated 12 patients with class III obesity divided into 4 groups of 3 patients each. In groups I and II, 200 U Btx-A were injected into the antropyloric region at 8 and 16 sites, respectively. Groups III and IV received 300 U Btx-A into the antropyloric region at 16 and 24 sites, respectively. Body weight and gastric emptying time (GET) of solids and semi-solids using 13C-octanoic acid breath test and 13C-acetic acid breath test, respectively, were determined before and after injection over a period of 12 weeks. RESULTS: Pre- and post-treatment body weight or solid and semi-solid GET did not differ significantly between groups (P>0.05). All patients reported a feeling of early satiety. No adverse effects related to BtxA or complications resulting from the endoscopic procedure were observed. CONCLUSION: The injection of different doses of BtxA at different sites in the antropyloric region of patients with class III obesity did not interfere significantly with the solid and semi-solid GET or body weight of these individuals. However, early satiety was reported by all patients, the procedure was safe and no side-effects of the treatment were observed. Further controlled studies involving different methodologies regarding dosage of Btx-A and sites of injection are necessary.

Antimicrobial susceptibility of microorganisms recovered from intraabdominal infections at Belo Horizonte, Brazil.

We evaluated antimicrobial susceptibility patterns of microorganisms isolated from intraabdominal infection of Brazilian patients, by agar dilution, agar diffusion, and E test. Among the strictly anaerobes, 57.7% were resistant to penicillin, 28.2% to clindamycin, and 9.9% to metronidazole. The majority of Escherichia coli and Staphylococcus were sensitive and resistant to almost all drugs, respectively. Half of Candida samples were resistant to itraconazole. Our data reinforce the importance of this kind of study to support rational antimicrobial therapy.

Cisto de duplicação gástrica com parênquima pancreático ectópico em adulto assintomático / Duplication cyst of the stomach with ectopic pancreatic tissue in an asymptomatic adult

The authors describe a rare case of a gastric duplication cyst in a 55-year-old man. The past history revealed that the patient was treated one year before for gastroduodenal ulcer. The cyst was discovered incidentally at upper gastrointestinal endoscopy. Biopsies showed inflammation without evidence of tumor. On abdominal ultrasonography and CT scan, a left upper quadrant mass was noted. At laparotomy, a mass measuring 6,0 cm in contact with the stomach was excised. Histopathology showed a gastric duplication cyst containing pancreatic mucosa.