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1.
Transplant Proc ; 49(4): 848-851, 2017 May.
Artigo em Inglês | MEDLINE | ID: mdl-28457409

RESUMO

BACKGROUND: There are only 4 prior studies reporting on outcomes of liver transplantation (LT) using Institutes Georges Lopez-1 (IGL-1) preservation solution. Detection of negative predictors of LT using IGL-1 may help finding strategies to protect selected recipients at higher risk of graft failure and death. METHODS: Review of all consecutive adult patients who underwent a first whole-graft LT using IGL-1 at authors' institution from 2013 to 2016. Primary end point was graft failure within the first 90 postoperative days (PODs). Graft losses due to any cause (including all deaths with a functioning graft) were recorded as graft failures. RESULTS: Of all 100 patients included in this study, 37 were women; median age was 58 years (range 18-71). There were 12 graft losses during the first 90 PODs (including 3 cases of primary nonfunction of the liver allograft), and 10 of the 12 graft losses occurred on first 30 PODs. All 12 patients who experienced graft loss (including 1 patient who underwent liver retransplantation) died within the first 90 PODs. Of the total 100 patients, 14 experienced biliary complications. Univariate analysis revealed prolonged warm ischemic time (WIT) as the only predictor of 90-day graft failure (odds ratio = 23.5, confidence interval = 1.29-430.18, P = .03). The cutoff by receiver operating characteristic curve for WIT was 38 minutes (area under the curve = 0.70). Positive predictive value for WIT >38 minutes was 94.3%. CONCLUSIONS: LT using IGL-1 can be performed safely. Similar to prior reports on LT using other preservation solutions, prolonged WIT was associated with adverse outcomes.


Assuntos
Transplante de Fígado/métodos , Soluções para Preservação de Órgãos , Preservação de Órgãos/métodos , Adolescente , Adulto , Idoso , Doença Hepática Terminal/cirurgia , Feminino , Sobrevivência de Enxerto , Humanos , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Prognóstico , Reoperação , Estudos Retrospectivos , Fatores de Tempo , Isquemia Quente , Adulto Jovem
2.
Exp Mol Pathol ; 100(2): 325-31, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26899552

RESUMO

Hot beverage consumption is a risk factor for esophageal squamous cell carcinoma, but the underlying mechanisms are still unknown. We developed an experimental mouse model to understand the mechanism of thermal lesion to esophageal carcinogenesis. Female BALB/c mice were treated by gavage with water at different temperatures three times a week and nitrosamines in the drinking water. Water at 70°C, but not at lower temperatures, initially induced an esophageal necrosis that healed and became resistant to necrosis after further administrations. However, when 70°C water was associated with N-nitrosodiethylamine at doses above 1 ppm, there was interference in epithelial regeneration, allowing recurrent thermal injury and inflammation. Recurrent thermal injury resulted in hyper proliferative premalignant lesions being induced earlier (at 4 weeks) and at a higher frequency (4-fold increase at 16 weeks) when compared to mice treated with NDEA only. Ki-67 immunostaining revealed that recurrent thermal injury induced basal cell proliferation resulting in the expansion of epithelial basal cells, confirmed by the increase in cytokeratin 14 positive cells with concomitant reduction of differentiated cytokeratin 5 positive cells. We conclude that recurrent thermal lesion may act as a tumor promoter though a strong proliferation stimulus of esophageal epithelial basal cells.


Assuntos
Proliferação de Células/efeitos dos fármacos , Água Potável/administração & dosagem , Esôfago/patologia , Temperatura Alta , Lesões Pré-Cancerosas/patologia , Animais , Dietilnitrosamina/administração & dosagem , Dietilnitrosamina/toxicidade , Água Potável/efeitos adversos , Água Potável/química , Esôfago/metabolismo , Feminino , Imuno-Histoquímica , Antígeno Ki-67/metabolismo , Camundongos Endogâmicos BALB C , Lesões Pré-Cancerosas/etiologia , Lesões Pré-Cancerosas/metabolismo , Mucosa Respiratória/efeitos dos fármacos , Mucosa Respiratória/metabolismo , Mucosa Respiratória/patologia , Análise de Sobrevida , Fatores de Tempo
3.
Pediatr Transplant ; 17(5): 445-53, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23730951

RESUMO

Small children are a challenging group in whom to perform KT. This retrospective study analyzed the results of 62 KTs in children weighing <15 kg, performed between 1998 and 2010, using extraperitoneal access and anastomosis of the renal vessels of donors to the aorta and IVC or iliac vessels of the recipients. Thirty-two (51.6%) grafts were LRDTs and 30 (48.4%) were DDRTs-28 of them pediatric. The mean age at KT was 3.7 ± 2.2 yr (1-12), and the mean weight was 12.3 ± 2.1 kg (5.6-14.9). Ten children weighed <10 kg, and five (8.1%) children presented previous thrombosis of the venous system. At one and five yr, patient survival was 93.2% and 84.2%, and graft survival was 85.2% and 72.7%. There were no differences between the rates for LRDT and DDRT. There were six vascular complications (four vascular thromboses, one laceration, and one renal artery stenosis) and two perirenal collections. Extraperitoneal access is a valid KT technique in children weighing <15 kg.


Assuntos
Peso Corporal , Transplante de Rim/métodos , Anastomose Cirúrgica , Aorta/cirurgia , Criança , Pré-Escolar , Feminino , Taxa de Filtração Glomerular , Sobrevivência de Enxerto , Humanos , Veia Ilíaca/cirurgia , Imunossupressores/uso terapêutico , Lactente , Rim/cirurgia , Masculino , Complicações Pós-Operatórias , Insuficiência Renal , Estudos Retrospectivos , Trombose/patologia , Resultado do Tratamento , Veia Cava Inferior/cirurgia
5.
Carcinogenesis ; 28(12): 2537-42, 2007 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-17916905

RESUMO

Esophageal cancer is among the most common and fatal tumors in the world. Eighty percent of esophageal tumors are esophageal squamous cell carcinoma (ESCC). Brazil is one of the high incidence areas in the West, where tobacco and alcohol consumption have been associated with ESCC. However, polymorphisms in xenobiotic metabolizing genes may also contribute to the risk. Therefore, in this study, we analyzed the risk of ESCC associated with tobacco and alcohol consumption and with polymorphisms of CYP2A6 (CYP2A6*2), CYP2E1 (CYP2E1*5B, CYP2E1*6), GSTP1 (Ile105Val), GSTM1 and GSTT1 null genotypes in 126 cases and 252 age- and gender-matched controls. Data on the amount, length and type of tobacco and alcohol consumed were collected, and DNA was extracted from blood lymphocytes from all individuals. Polymorphisms were analyzed by polymerase chain reaction (PCR)-multiplex (GSTM1 and T1), PCR-Restriction Fragment Length Polymorphism (CYP2E1*5B and *6 and GSTP1 Ile105Val) or allele-specific PCR amplification (CYP2A6*2). Risks were evaluated by multivariate conditional regression analysis. As expected, tobacco [odds ratio (OR) = 6.71, 95% confidence interval (95% CI) 3.08-14.63] and alcohol (OR = 16.98, CI 7.8-36.98) consumption, independently or together (OR = 26.91, CI 13.39-54.05) were risk factors. GSTP1 Ile105Val polymorphism was an independent risk factor (OR = 2.12, CI 1.37-3.29), whereas GSTT1 wild-type was an independent protective factor for ESCC (OR = 0.37, CI 0.16-0.79). There was approximately 80% statistical power to detect both results. There was no risk associated with CYP2A6, CYP2E1 and GSTM1 polymorphisms. In conclusion, this study suggests an opposite role of GSTP1 and GSTT1 polymorphisms for the risk for ESCC.


Assuntos
Hidrocarboneto de Aril Hidroxilases/genética , Citocromo P-450 CYP2E1/genética , Neoplasias Esofágicas/genética , Glutationa S-Transferase pi/genética , Glutationa Transferase/genética , Oxigenases de Função Mista/genética , Adulto , Idoso , Idoso de 80 Anos ou mais , Consumo de Bebidas Alcoólicas , Brasil , Estudos de Casos e Controles , Citocromo P-450 CYP2A6 , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Polimorfismo Genético , Fatores de Risco , Fumar
6.
Dis Esophagus ; 20(3): 212-6, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-17509117

RESUMO

We aim to determine the expression of the proto-oncogene c-Myc in patients with Barrett's esophagus (BE) and esophageal adenocarcinoma, and to evaluate the prevalence of such expression in relation to the metaplasia-dysplasia-adenocarcinoma sequence. BE develops as a result of a severe esophageal mucosa injury from gastroesophageal reflux. BE is a premalignant lesion and plays an important role in the development of esophageal adenocarcinoma. Several genetic alterations have been identified in the process that transforms a normal cell into a tumorous one. In the development of human tumors, one of the most important genes is the proto-oncogene c-Myc. The c-Myc protein expression was determined by immunohistochemical analysis in four different groups: 31 patients with normal tissue, 43 patients with BE without dysplasia, 11 patients with dysplasia in BE and 37 patients with esophageal adenocarcinoma. The material was obtained from esophageal biopsies or the dissection of patient esophagectomy specimens. Demographic and endoscopic data (sex, age, race and intestinal metaplasia extension), and morphologic and histopathologic tumor characteristics (deep tumor invasion, lymph node status, and tumor differentiation) were analyzed. The c-Myc expression was assessed using the Immunoreactive Scoring System (IRS). Overexpression of c-Myc was found in only 9.6% of normal tissue specimens, 37.2% of Barrett's esophagus, 45.5% of BE patients with dysplasia and 73% of adenocarcinoma samples, with significant statistical difference among these groups. No correlation was identified when the c-Myc expression was compared with morphologic and histologic tumor features or endoscopic data. However, linear correlation of c-Myc overexpression along the metaplasia-dysplasia-adenocarcinoma sequence was observed. This study demonstrates a significant increase in the expression of c-Myc in Barrett's esophagus, dysplasia and adenocarcinoma in relation to the control group, as well as a linear progression of this gene expression in this sequence. These results point out the importance of this marker in the development of esophageal adenocarcinoma from BE.


Assuntos
Adenocarcinoma/metabolismo , Esôfago de Barrett/metabolismo , Neoplasias Esofágicas/metabolismo , Proteínas Proto-Oncogênicas c-myc/metabolismo , Adenocarcinoma/patologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Esôfago de Barrett/patologia , Estudos de Casos e Controles , Neoplasias Esofágicas/patologia , Esôfago/metabolismo , Esôfago/patologia , Feminino , Humanos , Masculino , Metaplasia/metabolismo , Metaplasia/patologia , Pessoa de Meia-Idade , Proto-Oncogene Mas
7.
Dis Esophagus ; 16(2): 112-8, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-12823209

RESUMO

The most common genetic alterations found in a wide variety of cancers are p53 tumor suppressor gene mutations. p53 appears to be a nuclear transcription factor that plays a role in the control of cell proliferation, apoptosis, and the maintenance of genetic stability. Angiogenesis is a critical process in solid tumor growth and metastasis. Vascular endothelial growth factor (VEGF), a recently identified growth factor with significant angiogenic properties, may be a major tumor angiogenesis regulator. Few studies have investigated the association between p53 and VEGF expressions and prognosis in esophageal carcinoma. Forty-seven specimens resected from patients with stage II and III squamous cell carcinoma (SCC) of the esophagus were studied using immunohistochemical staining. VEGF and p53 expressions were observed in 40% and 53% of the tumors, respectively. The p53 and VEGF staining statuses were coincident in only 21% of the tumors, and no significant correlation was found between p53 and VEGF statuses. No clinicopathologic factors were significantly correlated with p53 or VEGF expression. No significant association between p53 and VEGF expressions and poor prognosis was found. In conclusion, p53 and VEGF were not correlated with prognosis in patients with stage II and III SCC of the esophagus.


Assuntos
Carcinoma de Células Escamosas/metabolismo , Neoplasias Esofágicas/metabolismo , Proteína Supressora de Tumor p53/metabolismo , Fator A de Crescimento do Endotélio Vascular/metabolismo , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/cirurgia , Neoplasias Esofágicas/mortalidade , Neoplasias Esofágicas/cirurgia , Esofagectomia , Feminino , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Prognóstico , Taxa de Sobrevida , Fatores de Tempo
8.
Arq Gastroenterol ; 37(1): 25-30, 2000.
Artigo em Português | MEDLINE | ID: mdl-10962624

RESUMO

UNLABELLED: "Matè", a popular hot infusion of a herb (Ilex paraguayensis) drunk in large volumes, is a known risk factor for squamous cell carcinoma of the esophagus and there is a suspicion that high temperature of boiled water used for the infusion may contribute for carcinogenesis. METHODS: We measured the temperature of "matè" infusion drunk by a sample of the population at risk for this carcinoma in Taquara, southern Brazil. We interviewed inhabitants for drinking habits and the temperature of the infusion was measured with high precision thermometers. Temperature of the infusion was asked to consumers and their estimate compared to our measurements. We considered 60 degrees C or higher as "hot". RESULTS: In 36 residencies, 107 individuals were drinking "matè". Most individuals drank it daily (97.2%), and the medium daily volume was 1,265 ml (SD +/- 1,132 mL) ranging from 250 to 6,000 mL. The measured temperature was 60 degrees C or higher in 72% of residencies with medium of 63.4 degrees C (51-78 degrees C) and median 64.4 degrees C. CONCLUSION: In this study, "matè" was consumed in large volumes at high temperature and individuals did not estimate correctly the temperature of infusion. High temperatures of "matè" may contribute to carcinogenesis in this population.


Assuntos
Bebidas/efeitos adversos , Carcinoma de Células Escamosas/etiologia , Neoplasias Esofágicas/etiologia , Comportamento Alimentar , Temperatura Alta/efeitos adversos , Adulto , Idoso , Brasil , Feminino , Humanos , Magnoliopsida/efeitos adversos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Estatísticas não Paramétricas , Inquéritos e Questionários , Sensação Térmica , População Urbana
9.
Arq Gastroenterol ; 36(1): 32-6, 1999.
Artigo em Português | MEDLINE | ID: mdl-10511877

RESUMO

UNLABELLED: There is increasing incidence of adenocarcinoma of the esophagus and esophagogastric junction in the USA and Europe, however, data in Brazil are scanty. OBJECTIVE AND METHODS: We reviewed all histology confirmed esophageal and esophagogastric junction cancer reports during a 10-year period (1987-1996) obtained by upper digestive endoscopy biopsies at a cancer referral center in Southern Brazil. Cancer cases were classified in three categories: adenocarcinoma, squamous cell carcinoma, and others. RESULTS: Among 349 cases, adenocarcinoma was found in 53 (15.2%), squamous cell carcinoma in 283 (81.1%) and others in 13 (3.7%). CONCLUSIONS: In this study, the prevalence of adenocarcinoma was 15%.


Assuntos
Adenocarcinoma/epidemiologia , Neoplasias Esofágicas/epidemiologia , Junção Esofagogástrica , Brasil/epidemiologia , Carcinoma de Células Escamosas/epidemiologia , Feminino , Humanos , Masculino , Prevalência , Estudos Retrospectivos
10.
Int Surg ; 84(3): 193-8, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10533775

RESUMO

To determine long-term survival of patients with thoracic oesophageal tumor who underwent resection, and to identify possible associated prognostic factors, 58 patients underwent oesophagectomy alone (group A) and 16 combined with neo-adjuvant chemoradiotherapy (group B). Univariate and multivariate analysis of prognostic factors were performed for age, depth of oesophageal wall tumour penetration, node involvement, type of resection, TNM stage and degree of tumour differentiation. Long-term survival rates at 1-5 years were 81% versus 89%; 56% versus 67%; 30% versus 67%; 12% versus 44%; and 0% versus 33% for group A and B, respectively (P = 0.0543, NS). Univariate analysis revealed only depth of invasion (P = 0.0076) and TNM stage (P = 0.0452) as isolated prognostic factors for long-term survival and multivariate analysis did not demonstrate any independent factor. Despite the small number of cases, neoadjuvant chemoradiotherapy seems to improve prognosis as well as to allow resection in a greater number of cases due to tumor downstaging.


Assuntos
Carcinoma de Células Escamosas/mortalidade , Neoplasias Esofágicas/mortalidade , Carcinoma de Células Escamosas/cirurgia , Carcinoma de Células Escamosas/terapia , Neoplasias Esofágicas/cirurgia , Neoplasias Esofágicas/terapia , Esofagectomia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Terapia Neoadjuvante , Prognóstico , Análise de Sobrevida , Taxa de Sobrevida
11.
Dis Esophagus ; 12(2): 99-105, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10466041

RESUMO

It is known that some nitrosamines preferably affect particular organs because of their organospecificity. Diethylnitrosamine (DEN) is one of the most powerful nitrosamines for experimentally inducing esophagus cancer. The present study aimed to evaluate the rate and type of epithelial lesions induced by DEN in mice. We also assessed the role of alcohol and N-nitrosonornicotine (NNN) as promoters of this carcinogenesis. A total of 208 female mice (Mus musculus) were allocated to five experimental groups: group 1, water only (controls); group 2, DEN + water; group 3, DEN + NNN; group 4, DEN + 6% alcohol solution; group 5, DEN + NNN + 6% alcohol solution. Animals in groups 2, 3, 4 and 5 received DEN (0.04 ml/l) three times per week, and during the following 4 days they received the other solutions. NNN was provided at a final concentration of 30 mg/l. The overall experimental period was 180 days. At the end of this time, the animals were killed and their esophagus was dissected for macro- and microscopic analysis. There was no significant difference in relation to the size of the esophagus and to the average DEN intake by the animals (p > 0.05). A statistically significant difference (p < 0.0001) was observed between controls and all other experimental groups. There was no significant difference among experimental groups treated with carcinogens (p > 0.05). The average incidence of cancer was 85.4%. The experimental model used in the present study is a very potent indicator of esophagus cancer. Owing to the high incidence for cancer observed in the present study, it was not possible to assess the effect of alcohol and NNN as inducers for the development of esophageal cancer.


Assuntos
Carcinógenos , Carcinoma de Células Escamosas/induzido quimicamente , Dietilnitrosamina , Neoplasias Esofágicas/induzido quimicamente , Etanol , Nitrosaminas , Animais , Carcinoma de Células Escamosas/patologia , Neoplasias Esofágicas/patologia , Esôfago/patologia , Feminino , Camundongos , Fatores de Tempo
12.
Dis Esophagus ; 12(2): 106-15, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10466042

RESUMO

Studies in human beings and animals have shown that esophageal exposure to duodenal and gastric contents may be important for the development of Barrett's esophagus and its complications, including adenocarcinoma and epidermoid carcinoma. Diethylnitrosamine (DEN) is a carcinogen that stimulates the development of epidermoid carcinoma in the esophagus of mice. The aim of this study was to evaluate the effect of gastroduodenal and gastric content reflux on induction of esophageal carcinogenesis. Gastroesophageal reflux (GER) and gastroduodenoesophageal reflux (GDER) were produced by cardioplasty and esophagoduodenostomy. The chosen carcinogen was DEN, diluted in drinking water, given 3 days a week for 20 consecutive weeks. One hundred Wistar female rats were divided into six groups, as follows: group 1 (18 rats), cardioplasty without DEN; group 2 (18 rats), cardioplasty with DEN; group 3 (10 rats), only water; group 4 (17 rats), cardioplasty with DEN; group 5 (17 rats), esophagoduodenostomy with DEN; group 6 (20 rats), only DEN. GER in isolation induced papillomatosis or ulceration in 22.2% of rats and, when associated with DEN, induced papillomatosis in 61.1% of rats. GDER in isolation induced marked esophagitis in 61.1% of rats, Barrett's esophagus in 16.7% and esophageal adenocarcinoma in 16.7%; when associated with DEN, 23.5% of rats presented marked esophagitis, papillomatosis or ulceration, whereas 76.5% had esophageal carcinoma, with 70.6% epidermoid carcinoma and 5.9% adenocarcinoma. Rats treated with water alone did not show histologic abnormalities of the esophageal mucosa. Rats treated with DEN alone developed papillomas in 50.0% of the cases and remained histologically unchanged in 50.0%. There was no development of low- or high-grade dysplasia in any group. The conclusions are that (1) GDER is significantly more deleterious to esophageal mucosa than GER; (2) in this study, GER did not present carcinogenic potential in relation to the esophagus; (3) GDER in isolation is an esophageal carcinogen, producing Barrett's esophagus and esophageal adenocarcinoma; (4) esophageal oncogenesis caused by GDER is potentiated by DEN, inducing esophageal epidermoid carcinoma; (5) in this study, DEN in isolation did not generate tumors in the esophagus of rats.


Assuntos
Refluxo Duodenogástrico/complicações , Neoplasias Esofágicas/etiologia , Esôfago/patologia , Refluxo Gastroesofágico/complicações , Adenocarcinoma/etiologia , Adenocarcinoma/patologia , Animais , Esôfago de Barrett/etiologia , Esôfago de Barrett/patologia , Carcinógenos , Carcinoma de Células Escamosas/etiologia , Carcinoma de Células Escamosas/patologia , Dietilnitrosamina , Neoplasias Esofágicas/patologia , Feminino , Ratos , Ratos Wistar
13.
Int Surg ; 84(1): 29-34, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10421014

RESUMO

A retrospective analysis on the clinical-surgical handling of patients with enterocutaneous fistula (ECF) was performed, where an alternative surgical technique was discussed: intestinal bypass. Fistula with draining over 500 ml/24 h, which were present in 13 patients, were classified as high debit. We defined as complex, the fistula with multiple orifices, high defect of the abdominal wall or through the mesh. The population studied consisted of 25 patients, 11 male, in a total of 34 ECF and mean age of 41.9 years. At clinical treatment with TPN for high debit ECF, 2 patients (16.6%) were cured, another 2 died and 8 (66.8%) needed surgical treatment. The surgery cured 7 patients (77.7%) with high debit ECF but 2 (22.3%) died. In the patients with low debit ECF, TPN cured 2 patients (40%) but failed in another 3 (60%). All patients with low debit ECF resolved with surgical treatment.


Assuntos
Fístula Cutânea/cirurgia , Fístula Intestinal/cirurgia , Adulto , Algoritmos , Anastomose Cirúrgica/métodos , Fístula Cutânea/complicações , Fístula Cutânea/patologia , Fístula Cutânea/terapia , Feminino , Humanos , Fístula Intestinal/complicações , Fístula Intestinal/patologia , Fístula Intestinal/terapia , Masculino , Pessoa de Meia-Idade , Distúrbios Nutricionais/etiologia , Distúrbios Nutricionais/terapia , Nutrição Parenteral Total , Estudos Retrospectivos , Sepse/complicações , Resultado do Tratamento
14.
Dis Esophagus ; 12(3): 191-5, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10631911

RESUMO

Diagnosis of squamous cell carcinoma of the esophagus is usually late. Staining of the mucosa with Lugol's solution during endoscopy has been suggested to identify early cancer/dysplasia and may improve prognosis. Lugol was tested during endoscopy in 96 asymptomatic subjects at risk for this tumor, who were found to have atypias after exfoliative cytology in southern Brazil. Biopsies were obtained in Lugol's 'stained' and 'unstained' areas in the esophageal mucosa and the histologic results were compared. 'Unstained' areas were present in 64 (66.7%) instances: 44 'unstained' areas over mucosa with normal appearance revealed seven dysplasias (four high and three low grade), whereas 20 'unstained' areas with visible lesions contained only one dysplasia (low grade). 'Stained' areas in 96 (100%) subjects showed two additional dysplasias (one high and one low grade). In this study, Lugol 'unstained' areas were of great value for detection of dysplasias (sensitivity = 80%; specificity = 63%; p = 0.01, Fisher's exact test; CI = 95%; odds ratio = 6.7).


Assuntos
Carcinoma de Células Escamosas/diagnóstico , Corantes , Doenças do Esôfago/diagnóstico , Neoplasias Esofágicas/diagnóstico , Esofagoscopia , Iodo , Lesões Pré-Cancerosas/diagnóstico , Idoso , Brasil , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
15.
Dis Esophagus ; 12(3): 196-201, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10631912

RESUMO

Squamous cell carcinoma of the esophagus is endemic in Rio Grande do Sul, the most southern state of Brazil, where the incidence reaches 27 out of 100,000 inhabitants per year. Palliative treatments, surgical or nonsurgical, impose lower mortality and lower costs. The choice of the best treatment for each patient depends on the neoplasia staging, and the local involvement of the tracheobronchial tree by tumor characterizes incurability. Computed axial tomography (CAT) is indicated, but remarkable contradictions were found in the literature. We studied 134 patients, diagnosed with esophageal squamous cell carcinoma, who underwent computed tomography and fiberoptic bronchoscopy (gold standard) performed with an uniform technique. An accuracy of 85.1% was obtained when computed tomography was compared with bronchoscopy with regard to impingement, displacement and invasion of trachea and bronchi. In conclusion, there is no statistically significant difference between computed tomography and fiberoptic bronchoscopy in the evaluation of tracheobronchial involvement by squamous cell carcinoma of the esophagus (p < 0.05).


Assuntos
Brônquios/patologia , Carcinoma de Células Escamosas/patologia , Neoplasias Esofágicas/patologia , Traqueia/patologia , Idoso , Broncografia , Broncoscopia , Carcinoma de Células Escamosas/diagnóstico por imagem , Neoplasias Esofágicas/diagnóstico por imagem , Feminino , Humanos , Masculino , Valor Preditivo dos Testes , Tomografia Computadorizada por Raios X , Traqueia/diagnóstico por imagem
16.
Surg Laparosc Endosc ; 8(5): 363-5, 1998 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-9799146

RESUMO

Wandering spleen is seldom seen in everyday situations, and its prevalence is not well defined in the literature. Its causes are not precisely known, and there is controversy over its management. A 34-year-old woman experienced low-intensity abdominal pain associated with a palpable hypogastric mass, which was confirmed by imaging studies to be a wandering spleen. Because of ureteral compression, a surgical approach was decided upon, and videolaparoscopic splenectomy was chosen. This technique, comments about specific technical issues, and other treatment options presented in the literature are discussed. Videolaparoscopic splenectomy has excellent surgical results, both functional and aesthetic.


Assuntos
Laparoscopia , Esplenectomia/métodos , Esplenopatias/cirurgia , Adulto , Feminino , Humanos , Baço/diagnóstico por imagem , Esplenopatias/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Gravação em Vídeo
17.
Int Surg ; 83(1): 67-8, 1998.
Artigo em Inglês | MEDLINE | ID: mdl-9706524

RESUMO

The correction of groin hernias has increasingly been performed by transperitoneal videolaparoscopic methods, using a polypropylene mesh. This could lead to an increased incidence of adhesion formation. The incidence of adhesions induced by mesh placement and the influence of reperitonization was observed on 40 male adult Wistar rats. Adhesions were significantly more common on the groups in which the prosthesis was placed (59% vs 95%; p = 0.01), as well as on the groups in which reperitonization was performed (58% vs 100%; p = 0.03). The results suggest that polypropylene mesh placement and reperitonization are each independent factors in the induction of adhesions formation.


Assuntos
Doenças Peritoneais/etiologia , Polipropilenos/efeitos adversos , Complicações Pós-Operatórias/etiologia , Telas Cirúrgicas/efeitos adversos , Aderências Teciduais/etiologia , Animais , Distribuição de Qui-Quadrado , Laparoscopia , Masculino , Peritônio/cirurgia , Ratos , Ratos Wistar , Cicatrização
18.
Rev. Assoc. Med. Bras. (1992) ; 43(4): 335-9, out.-dez. 1997. tab
Artigo em Português | LILACS | ID: lil-208755

RESUMO

INTRODUÇÄO. O carcinoma epidermóide de esôfago (CEE) tem uma importante associaçäo com neoplasias do trato aerodigestivo e, provavelmente, compartilham dos mesmos fatores de risco. Além destes, outras neoplasias podem estar associadas com o carcinoma de esôfago. OBJETIVO. Analisar, retrospectivamente, pacientes com carcinoma epidermóide de esôfago tratados pelo Grupo de Cirurgia do Esôfago, Estômago e Intestino Delgado (GCEEID) do Hospital de Clínicas de Porto Alegre (HCPA), no período de janeiro/88 a junho/95, os quais tinham neoplasias associadas ao CEE. PACIENTES E MÉTODOS. Dentre os 261 pacientes estudados, 19 (7,28 por cento) tinham neoplasia associada ao CEE. Dez pacientes apresentaram tumores sincrônicos e 9, metacrônicos. O sexo predominante foi o masculino, com 17 casos. A média de idade ficou em 62,52 anos no momento do diagnóstico da neoplasia esofágica. RESULTADOS. Os tumores aerodigestivos, na sua totalidade carcinomas escamosos, representaram o tipo histológico predominante da neoplasia associada em 68,42 por cento dos casos. O sítio mais freqüente da neoplasia aerodigestiva associada foi a árvore respiratória (53,8 por cento), seguido da cavidade oral e orofaringe (23 por cento) e laringe (23 por cento). Dos 19 pacientes, 12 eram tabagistas e nove ingeriam bebidas alcoólicas regularmente. Para o tratamento do CEE, optou-se por cirurgia em seis pacientes. A neoplasia associada foi tratada com cirurgia radical em 11 pacientes e radioterapia em cinco. Surpreendentemente, foram diagnosticados quatro casos (21 por cento) de adenocarcinomas gßstricos associados ao CEE, tratados com cirurgia radical em três pacientes. CONCLUSÄO. Os autores ressaltam a importância do estadiamento criterioso dos pacientes com CEE devido a associaçäo significativa com outras neoplasias, principalmente com tumores aerodigestivos. Alertam para o seguimento desses pacientes e discutem a possibilidade de fatores de risco comuns: fumo e álcool. Nesta casuística, encontrou-se associaçäo importante com neoplasias gástricas.


Assuntos
Adulto , Pessoa de Meia-Idade , Feminino , Humanos , Carcinoma de Células Escamosas/complicações , Neoplasias Esofágicas/complicações , Neoplasias Primárias Múltiplas/complicações , Carcinoma de Células Escamosas/terapia , Neoplasias Esofágicas/terapia , Seguimentos , Neoplasias Primárias Múltiplas/diagnóstico , Neoplasias Primárias Múltiplas/terapia , Estudos Retrospectivos , Fatores de Risco
19.
Int Surg ; 82(1): 56-9, 1997.
Artigo em Inglês | MEDLINE | ID: mdl-9189804

RESUMO

BACKGROUND: The surgical approach for patients with advanced epidermoid esophageal carcinoma should provide an effective palliative effect with morbidity ratio as low as possible. Anastomotic leakage is a frequent complication and may be responsible for both early and late morbidity and, therefore, we assessed the role of delayed cervical esophagovisceral anastomosis technique in relation to the incidence of anastomotic complications. METHODS: Eight patients (Group 1) and 12 patients (Group 2) submitted to one-stage or two-stage operation, respectively, were selected by an intraoperative assessment by the surgeon, considering mainly tissue blood flow of the replacement organ after its placement in the cervical region. RESULTS: In Group 1 anastomotic dehiscence was observed in 37.5% of patients, while in Group 2 no cases of dehiscence occurred (p = 0.049). However, the postoperative mortality rate did not differ between the two groups (12.5% versus 0%, NS). CONCLUSION: When organ viability is uncertain, esophagovisceral anastomosis is best done by two-stage operation, since it decreases the incidence of anastomotic leak.


Assuntos
Carcinoma de Células Escamosas/cirurgia , Neoplasias Esofágicas/cirurgia , Esôfago/cirurgia , Cuidados Paliativos/métodos , Deiscência da Ferida Operatória/prevenção & controle , Adulto , Idoso , Anastomose Cirúrgica/métodos , Anastomose Cirúrgica/mortalidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Estômago/cirurgia , Fatores de Tempo
20.
Rev Assoc Med Bras (1992) ; 43(4): 335-9, 1997.
Artigo em Português | MEDLINE | ID: mdl-9595747

RESUMO

INTRODUCTION: The esophageal epidermoid cancer has an important association with aerodigestive tract neoplasms and possibly share the same risk factors. Furthermore, other neoplasms can be associated with esophagus cancer. OBJECTIVE: To analyze retrospectively the patients with esophageal epidermoid cancer (EEC) and associated neoplasms, treated by the Esophagus Stomach and Small Intestine Group of Surgery at Hospital de Clinicas de Porto Alegre from January 1988 to June 1995. PATIENTS AND METHODS: Nineteen (7.28%) of the 261 studied patients had associated neoplasms to the EEC. Ten patients presented synchronic tumours and 9 metachronic ones. The predominant sex was the masculine with 17 cases. The mean age was 62.52 years in the moment of the esophageal cancer diagnostic. RESULTS: The aerodigestive tumours, squamous carcinomas in totality, represented the predominant associated neoplasm histological type in 68.42% of the cases. The most frequent associated aerodigestive tumours site was the respiratory tract (53.8%), followed by the oral cavity and oropharynx (23%) and larynx (23%). In our sample, twelve patients were smokers and 9 were alcohol abusers. In relation to the EEC treatment, surgery was performed in 6 patients. The associated neoplasm was treated with radical surgery in 11 patients and radiotherapy in 5. Surprisingly 4 cases (21%) of gastric adenocarcinoma associated to the EEC were diagnosed, treated with radical surgery in 3 patients. CONCLUSION: The authors call attention to the importance of a criterial staging as well as the follow up in patients with EEC owing to the significant association with others neoplasms, principally with aerodigestive tumours, and discuss the common risk factors possibility: tobacco and alcohol use. Important association with gastric neoplasms were found in this casuistry.


Assuntos
Carcinoma de Células Escamosas , Neoplasias Esofágicas , Neoplasias Primárias Múltiplas , Adulto , Idoso , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/terapia , Neoplasias Esofágicas/diagnóstico , Neoplasias Esofágicas/terapia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Primárias Múltiplas/diagnóstico , Neoplasias Primárias Múltiplas/terapia , Estudos Retrospectivos , Fatores de Risco
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