Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 19 de 19
Filtrar
1.
J Surg Oncol ; 2024 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-39295557

RESUMEN

BACKGROUND: Gastric cancer is the fifth most common neoplasm and the third leading cause of cancer-related death worldwide. Neoadjuvant chemotherapy is recommended for Stages II-III resectable tumors, but the comparative effectiveness of minimally invasive surgery (MIS) versus open gastrectomy (OG) post-neoadjuvant therapy has not been adequately investigated. METHODS: A retrospective cohort analysis was performed on patients with clinical Stage II and III gastric adenocarcinoma who underwent neoadjuvant chemotherapy followed by either MIS or OG between 2007 and 2020. Propensity score matching was utilized to compare the clinical and surgical outcomes, morbidity, and mortality, and the influence of MIS on 3-year survival rates was evaluated. RESULTS: After matching, no statistical differences in clinical aspects were noted between the two groups. MIS was associated with increased D2 lymphadenectomy, curative intent, and complete neoadjuvant therapy. Furthermore, this therapeutic approach resulted in reduced transfusion rates and shorter hospital stays. Nonetheless, no significant differences were observed in global, clinical, or surgical complications or mortality between the two groups. Weight loss emerged as a significant risk factor for complications, but MIS did not independently affect survival rates. Extended resection and higher American Society of Anesthesiology scores were independent predictors of reduced survival. CONCLUSION: MIS after neoadjuvant chemotherapy for gastric cancer appears to be a viable option, with oncological outcomes comparable to those of OG, less blood loss, and shorter hospital stays. Although MIS did not independently affect long-term survival, it offered potential benefits in terms of postoperative recovery and morbidity. Further studies are needed to validate these findings, especially across diverse populations.

2.
J Surg Oncol ; 2024 Aug 13.
Artículo en Inglés | MEDLINE | ID: mdl-39138843

RESUMEN

Transthoracic access emerges as an innovative approach to reach lesions in the upper hepatic segments, especially in patients with prior surgeries. This study evaluates transthoracic access for these resections through a retrospective single-center analysis of demographic data, surgical techniques, and postoperative outcomes of 353 liver surgeries, revealing promising results with minimal complications. Transthoracic access and pneumoperitoneum establishment via the transthoracic route, combined with intercostal trocar insertion, offer a viable alternative for minimally invasive liver surgeries.

3.
J Surg Oncol ; 126(1): 168-174, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35689580

RESUMEN

BACKGROUND AND OBJECTIVES: Incidence of pancreatic neuroendocrine tumors (pNETS) seems to be rising over the years, with many cases incidentally diagnosed. Surgery and active surveillance are current treatment modalities for small pNETS. We review our institutional series and compare outcomes for small asymptomatic and nonfunctioning tumors. METHODS: This retrospective cohort study included patients with 2 cm or less and well differentiated pNETS at a single Brazilian Cancer Center. From 2002 to 2020, patients received active surveillance or surgery as a treatment strategy. Short and long-term results were compared. RESULTS: Sixty-four patients were included, 41 in surgical strategy and 23 in the active surveillance approach. Baseline group characteristics were comparable. More patients on active surveillance underwent abdominal magnetic resonance imaging (MRI) and had tumors located in the pancreatic head (41% vs. 17%, p = 0.038). Minimally invasive procedure was chosen in 80.1% of the surgical patients. No patient died after surgery. Median follow-up period was 38.6 and 46.4 months for active surveillance and surgery cohorts, respectively. No difference in disease progression rate was observed. CONCLUSION: Both approaches seem to be safe for small pNETs. Long-term outcome and quality of life should be considered when discussing such options with patients.


Asunto(s)
Tumores Neuroectodérmicos Primitivos , Tumores Neuroendocrinos , Neoplasias Pancreáticas , Brasil/epidemiología , Estudios de Cohortes , Humanos , Tumores Neuroendocrinos/patología , Pancreatectomía/métodos , Neoplasias Pancreáticas/patología , Calidad de Vida , Estudios Retrospectivos , Espera Vigilante
4.
J Surg Oncol ; 126(1): 150-160, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35689592

RESUMEN

BACKGROUND AND OBJECTIVES: The incidence, predictive, and prognostic impact of programmed cell death (PD-L1) expression in gastric (GC) and gastroesophageal junction tumors (GEJC) treated with perioperative chemotherapy is poorly understood. We aimed to assess PD-L1 expression by immunohistochemistry (IHC) in both pre and posttreatment specimens evaluating its impact on pathological response and survival outcomes. METHODS: Retrospective cohort of patients with GC and GEJ tumors treated in a single western cancer center between 2007 and 2017. PD-L1 expression was assessed by IHC before and after neoadjuvant chemotherapy, in surgical samples, and reported as combined positive score (CPS). CPS > 1% was tested for its association with pathological response and overall survival (OS). RESULTS: We were able to assess PD-L1 expression in at least one tissue sample from 155 subjects. PD-L1 positivity rate was 20%. In 74 paired samples, a 21% discordance between PD-L1 expression in biopsy sample and surgical specimen was observed. With a median follow-up period of 60.3 months, 5-years disease-free survival was 60.5% with a median OS not reached. PD-L1 expression was neither associated with pathological response or survival outcomes. CONCLUSIONS: PD-L1 expression in the setting of locally advanced GC tumors was relatively low and can vary considering the tissue sample analyzed. This expression had no association with survival or pathological response in this population.


Asunto(s)
Antígeno B7-H1 , Neoplasias Gástricas , Antígeno B7-H1/metabolismo , Unión Esofagogástrica/patología , Unión Esofagogástrica/cirugía , Humanos , Pronóstico , Estudios Retrospectivos , Neoplasias Gástricas/tratamiento farmacológico , Neoplasias Gástricas/metabolismo , Neoplasias Gástricas/cirugía
5.
Ann Surg Oncol ; 29(1): 274-284, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-34782973

RESUMEN

BACKGROUND: Intensive surveillance after treatment of gastric cancer patients with curative intent may lead to an earlier diagnosis of disease recurrence, but its impact on survival is uncertain. This study aimed to evaluate whether early diagnosis of disease recurrence among asymptomatic patients was associated with long-term survival. METHODS: This retrospective study analyzed patients with stages 1 to 3C gastric adenocarcinoma treated between 1999 and 2018. All recurrence events were classified as symptomatic or asymptomatic (detected by follow-up tests), and their clinicopathologic characteristics, patterns of recurrence, and survival were analyzed. RESULTS: The cohort consisted of 669 patients treated with a total gastrectomy in 48.6% and a D2-lymphadenectomy in 88.8% of the cases. Most of the tumors were pT3-4 (46.5%), with 45.5% involving lymph node metastases and 42.3% manifesting a diffuse histology. During a median follow-up period of 80.1 months (95% confidence interval [CI], 75.3-84.8 months), 166 patients had recurrences (24.8%), 65.7% of which were symptomatic. The peritoneum was the main site of recurrence (37.2%), and peritoneal recurrence was associated with worse overall survival (OS) (hazard ratio, 1.69; 95%CI, 1.2-2.37). The median disease-free, post-recurrence survival, and OS periods in the asymptomatic and symptomatic groups were respectively 13.4 versus 17.2 months (p = 0.04), 11.9 versus 4.7 months (p < 0.001), and 29.9 versus 26.4 months (p = 0.21). When OS was analyzed among the patients with non-peritoneal recurrence, no difference was observed between the two groups (31.3 vs 31.1 months; p = 0.46). CONCLUSION: Early diagnosis of asymptomatic disease recurrence did not affect the OS of the gastric cancer patients treated with curative intent. The use of intensive surveillance strategies in this scenario still requires further evidence.


Asunto(s)
Neoplasias Gástricas , Estudios de Seguimiento , Humanos , Estudios Retrospectivos , Neoplasias Gástricas/cirugía
6.
Ecancermedicalscience ; 15: 1195, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33889204

RESUMEN

Oesophageal cancer is among the ten most common types of cancer worldwide. More than 80% of the cases and deaths related to the disease occur in developing countries. Local socio-economic, epidemiologic and healthcare particularities led us to create a Brazilian guideline for the management of oesophageal and oesophagogastric junction (OGJ) carcinomas. The Brazilian Group of Gastrointestinal Tumours invited 50 physicians with different backgrounds, including radiology, pathology, endoscopy, nuclear medicine, genetics, oncological surgery, radiotherapy and clinical oncology, to collaborate. This document was prepared based on an extensive review of topics related to heredity, diagnosis, staging, pathology, endoscopy, surgery, radiation, systemic therapy (including checkpoint inhibitors) and follow-up, which was followed by presentation, discussion and voting by the panel members. It provides updated evidence-based recommendations to guide clinical management of oesophageal and OGJ carcinomas in several scenarios and clinical settings.

8.
J Surg Oncol ; 121(5): 893-900, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32153041

RESUMEN

BACKGROUND: Hepatic metastases are a major cause of death in patients with colorectal cancer. A comprehensive assessment of the prognostic factors associated with long-term survival could improve patient selection for surgical approaches and decrease morbidity and futile locoregional treatments. METHODS: We performed a retrospective analysis of patients who underwent hepatectomy for colorectal liver metastases at a single center from 2000 to 2012. RESULTS: To identify factors associated with 5- and 10-year overall (OS) and disease-free survival (DFS), we analyzed 280 patients and 150 patients in the 5- and 10-year cohorts, respectively. Only seven relapses occurred after 5 years of follow-up, and no relapses occurred after 10 years. Multivariable analysis indicated that bilobar disease and extra-hepatic disease before hepatectomy were independent 5- and 10-year predictors of OS, and major postoperative complications predicted OS in the 5-year survival cohort only. Our analysis indicated that prognostic factors associated with DFS included some confounders and was therefore inconclusive. CONCLUSIONS: Taken together, our results suggest that the predictors of 5- and 10-year OS rates of colorectal cancer patients with hepatic metastases are similar, differing only by postoperative complications that influenced exclusively 5-year survival. Since no relapse occurred 10 years after hepatic resection, oncological remission is likely.


Asunto(s)
Neoplasias Colorrectales/patología , Hepatectomía , Neoplasias Hepáticas/mortalidad , Neoplasias Hepáticas/cirugía , Brasil , Quimioterapia Adyuvante , Estudios de Cohortes , Supervivencia sin Enfermedad , Femenino , Humanos , Neoplasias Hepáticas/secundario , Masculino , Márgenes de Escisión , Persona de Mediana Edad , Recurrencia Local de Neoplasia , Complicaciones Posoperatorias , Estudios Retrospectivos
9.
J Surg Oncol ; 121(5): 823-832, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31950511

RESUMEN

BACKGROUND: Hyperthermic intraperitoneal chemotherapy (HIPEC) has been associated with improved survival when compared with surgery alone for non-metastatic gastric cancer patients in randomized trials and meta-analyses. However, little evidence is available regarding the use of HIPEC in nonmetastatic patients who are treated with perioperative chemotherapy and radical surgery. The aim of this study was to investigate the putative survival benefit of HIPEC in the subgroup of gastric cancer patients treated with perioperative chemotherapy and surgery. PATIENTS AND METHODS: This was a retrospective cohort study that included gastroesophageal junction and gastric cancer patients who were treated with perioperative chemotherapy and curative resection in a single cancer center in the period between 2006 and 2017. In this time period, younger patients with diffuse-type tumors and serosa invasion or positive lymph node disease were often offered an adjuvant HIPEC protocol. This study compared the survival outcomes of these patients to the ones of those who received only perioperative chemotherapy and resection. A 2:1 propensity-score matched analysis for the two groups was also performed, and variables used were postchemotherapy T (ypT) and N (ypN) stages, histology and tumor site. RESULTS: The study population comprised 269 subjects, 241 treated with chemotherapy and surgery and 28 who also received HIPEC. The mean age was 59 years old (standard deviation: 12.2) and 60% of all individuals were male. A total gastrectomy was performed in 137 patients and a distal resection in 132, with a D2-lymphadenectomy in 97.4% of the sample. Overall 60-day morbidity and mortality rates were 35.3% and 3.3%, respectively. In the HIPEC group, patients were younger, and more frequently had American Society of Anesthesiologists (ASA) 1 to 2 classification, tumors located in the gastric body, had diffuse histology, and ypN+ disease. Overall survival (OS; 5 years) results in the HIPEC and no HIPEC group were 59.5% vs 68.7% (P = .453), and disease-free survival (DFS) ones were 49.5% and 65.8% (P = .060), respectively. In the multivariable Cox regression model, ypT and ypN were independent overall and DFS predictors; also, ASA 3 to 4 classification and diffuse histology were associated with worse OS. In the matched analysis, HIPEC did not improve either overall (53.5% vs 59.5%; P = .517) or DFS (50.0% vs 49.5%; P = .993). CONCLUSION: Treatment with HIPEC in patients who received perioperative chemotherapy and a D2-resection did not improve survival outcomes. Both ypT and ypN stages remained as the most important survival predictors in this cohort.


Asunto(s)
Gastrectomía , Hipertermia Inducida , Neoplasias Gástricas/mortalidad , Neoplasias Gástricas/terapia , Adenocarcinoma/mortalidad , Adenocarcinoma/patología , Adenocarcinoma/terapia , Estudios de Cohortes , Supervivencia sin Enfermedad , Femenino , Humanos , Escisión del Ganglio Linfático , Masculino , Análisis por Apareamiento , Persona de Mediana Edad , Puntaje de Propensión , Estudios Retrospectivos , Neoplasias Gástricas/patología
10.
J Surg Oncol ; 121(5): 857-862, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31808559

RESUMEN

INTRODUCTION: Pancreatic malignant tumors are resectable at diagnosis in only 15% to 20% of cases and invasion of vascular structures is commonly present. Therefore, extended resections are needed for adequate local control and negative margins. However, morbidity and mortality associated with these enlarged resections are limiting factors. The aim of this study was to correlate demographic and technical aspects that influenced early and late outcomes. MATERIALS AND METHODS: Between October 2007 and May 2019, 523 pancreatic surgeries were performed, of which 72 required vascular resections. Clinical and histopathological data, surgical techniques, and perioperative parameters were analyzed in a prospectively collected database. RESULTS: Of the 72 cases of vascular resection, 31 were male and 41 females with a mean age of 60.9 years (34-81). The most commonly affected vascular structure was the portal vein (in 40.3%). Free margins were obtained in 77.8% of cases. Postoperative mortality rate at 60 days was 13.9%. American Society of Anesthesiologists (ASA) and age were the most important predictors of major complications. CONCLUSION: Extended resections with vascular involvement in pancreatic surgeries are feasible and safe; furthermore, patient selection plays are key. ASA and age were the most important factors in the decision-making process for extended resections.


Asunto(s)
Venas Mesentéricas/cirugía , Invasividad Neoplásica , Neoplasias Pancreáticas/patología , Neoplasias Pancreáticas/cirugía , Vena Porta/cirugía , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Brasil/epidemiología , Carcinoma Ductal Pancreático/mortalidad , Carcinoma Ductal Pancreático/patología , Carcinoma Ductal Pancreático/cirugía , Colangiocarcinoma/mortalidad , Colangiocarcinoma/patología , Colangiocarcinoma/cirugía , Estudios de Cohortes , Femenino , Arteria Hepática/patología , Arteria Hepática/cirugía , Humanos , Masculino , Arterias Mesentéricas/patología , Arterias Mesentéricas/cirugía , Venas Mesentéricas/patología , Persona de Mediana Edad , Pancreatectomía , Neoplasias Pancreáticas/mortalidad , Vena Porta/patología , Complicaciones Posoperatorias/epidemiología , Estudios Retrospectivos
11.
J Surg Oncol ; 120(8): 1371-1378, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31696512

RESUMEN

BACKGROUND: Postoperative complications after gastric cancer resection vary in different series and they might have a significant impact in long-term outcomes. Our aim was to build a prediction rule on gastric cancer patients' overall and major morbidity risks. METHODS: This retrospective study included 1223 patients from a single center who were resected between 1992 and 2016. Overall and major morbidity predictors were identified through multiple logistic regression. Models' performances were assessed through discrimination, calibration, and cross-validation, and nomograms were constructed. RESULTS: The mean age was 61.3-year old and the male gender was more frequent (60%). The most common comorbidities were hypertension (HTN), diabetes, and chronic obstructive pulmonary disease (COPD). A D2-distal gastrectomy was the most frequent procedure and 87% of all lesions were located in the middle or distal third. Age, COPD, coronary heart disease, chronic liver disease, pancreatic resection, and operative time were independent predictors of overall and major morbidity. The extent of resection and splenectomy was associated with overall events and HTN with major ones. Both models were very effective in predicting events among patients at higher risk. CONCLUSIONS: The overall and major morbidity models and nomograms included clinical- and surgical-related data that were very effective in predicting events, especially for high-risk patients.


Asunto(s)
Gastrectomía/efectos adversos , Complicaciones Posoperatorias/epidemiología , Neoplasias Gástricas/cirugía , Factores de Edad , Brasil/epidemiología , Estudios de Cohortes , Enfermedad Coronaria/epidemiología , Femenino , Humanos , Hipertensión/epidemiología , Hepatopatías/epidemiología , Escisión del Ganglio Linfático , Masculino , Persona de Mediana Edad , Tempo Operativo , Páncreas/cirugía , Enfermedad Pulmonar Obstructiva Crónica/epidemiología , Estudios Retrospectivos , Factores de Riesgo , Esplenectomía , Neoplasias Gástricas/epidemiología
12.
Ann Surg Oncol ; 26(11): 3618-3626, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31222685

RESUMEN

BACKGROUND: Perioperative chemotherapy and surgery is the standard of care in advanced gastroesophageal cancer patients, but its impact among those treated with radical surgery still needs further assessment. We present the results of this multimodality treatment approach in a gastric cancer patients cohort treated with D2 lymphadenectomy. We aimed to identify prognostic factors associated with improved survival. PATIENTS AND METHODS: This retrospective cohort study enrolled patients treated with perioperative chemotherapy and resection in a single cancer center in Brazil between 2006 and 2016. Subjects presenting tumors of the gastric stump, esophageal tumors, or treated with intraperitoneal chemotherapy were excluded. Intention-to-treat survival analysis was performed for all subjects who started neoadjuvant chemotherapy, and prognostic factors were determined among those who had R0 resection. RESULTS: This study included 239 patients, of whom 198 had R0 resection. The mean age was 59.9 years, and most had clinical stage IIB or III disease (88%). Among the 239 patients who started neoadjuvant chemotherapy, 207 (86.6%) completed all neoadjuvant treatment cycles, and surgical resection was performed in 225 subjects (94.1%). Overall 60-day morbidity and mortality rates were 35.6% and 4.4%, respectively. For the entire cohort, median survival was 78 months and the 5-year survival rate was 55.3%. Factors associated with worse survival were ypT3-4 stage, ypN + stage, extended resection, and no adjuvant chemotherapy. CONCLUSIONS: Perioperative chemotherapy resulted in very good outcomes for patients treated with radical surgery, and downstaging after chemotherapy was shown to be a major determinant of prognosis.


Asunto(s)
Adenocarcinoma/mortalidad , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Quimioterapia Adyuvante/mortalidad , Gastrectomía/mortalidad , Terapia Neoadyuvante/mortalidad , Atención Perioperativa/mortalidad , Neoplasias Gástricas/mortalidad , Adenocarcinoma/secundario , Adenocarcinoma/terapia , Terapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Estudios Retrospectivos , Neoplasias Gástricas/patología , Neoplasias Gástricas/terapia , Tasa de Supervivencia
13.
J Surg Oncol ; 117(5): 858-863, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29611198

RESUMEN

BACKGROUND AND OBJECTIVES: Recent studies have suggested that sidedness of origin from colorectal adenocarcinomas is a predictor of survival, however the impact of this factor in patients with resected colon cancer liver metastases (CLM) is not clear. So, in this study, we compared clinic and pathologic characteristics and long-term survival of patients with resected CLM according to the primary tumor location. METHODS: This is a retrospective analyzes of a prospective database. Patients with resected CLM from 1998 to 2012 were included. Right colon included tumors from cecum to middle transverse colon, and left colon included tumors from splenic flexure to sigmoid. RESULTS: One hundred fifty-one patients were included, 27 right colon and 124 left colon. In the latter group, there were more patients with synchronous disease (67.7 × 6.2%, P = 0.026) and a higher CEA (22.0 × 11.7 ng/mL, P = 0.001). However, K-Ras mutation was more frequent in right sided tumors (75.0 × 24.1%, P = 0.001). There was no difference in long term survival in both groups in this series even when adjusted for the confounding variables. CONCLUSION: Sidedness do not seem to be a predictor of long term survival in patients with resected colon cancer liver metastases.


Asunto(s)
Neoplasias Colorrectales/mortalidad , Neoplasias Hepáticas/mortalidad , Recurrencia Local de Neoplasia/mortalidad , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias Colorrectales/patología , Neoplasias Colorrectales/cirugía , Femenino , Estudios de Seguimiento , Hepatectomía , Humanos , Neoplasias Hepáticas/secundario , Neoplasias Hepáticas/cirugía , Metástasis Linfática , Masculino , Persona de Mediana Edad , Invasividad Neoplásica , Recurrencia Local de Neoplasia/patología , Recurrencia Local de Neoplasia/cirugía , Pronóstico , Estudios Prospectivos , Estudios Retrospectivos , Tasa de Supervivencia , Adulto Joven
14.
Cardiovasc Intervent Radiol ; 40(5): 769-775, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-28101617

RESUMEN

PURPOSE: Computed tomography (CT) is commonly used to guide drainage of deep-seated abdominal fluid collections. However, in some cases, these collections seem to be inaccessible due to surrounding organs or their being in difficult locations. The aim of this study is to describe a modified Trocar technique to drain collections in difficult locations, especially those in the subphrenic space, without passing through intervening organs. MATERIALS AND METHODS: This retrospective case series study describes seven inpatients who underwent CT-guided drainage using a modified Trocar technique for abscesses that are difficult to access percutaneously. All patients provided written informed consent prior to the procedure. After placement of a 12-14F catheter inside the peritoneum, the Trocar stylet was removed so that the tip of the catheter became blunt and flexible to avoid injury to organs and structures in the catheter route, and the catheter was slowly advanced towards the collection using CT guidance and tactile sensation. After reaching the target, the stylet was reintroduced to enter the abscess wall. RESULTS: All procedures were performed using an anterior abdominal wall access with adequate catheter positioning and resulted in clinical status improvement in the days after the drainage. No complications related to the procedure were identified in any of the patients. CONCLUSIONS: The modified Trocar technique for percutaneous CT-guided drainage of abdominal abscesses may be feasible for lesions that are difficult to access with conventional methods.


Asunto(s)
Absceso Abdominal/terapia , Drenaje/instrumentación , Drenaje/métodos , Radiografía Intervencional/métodos , Tomografía Computarizada por Rayos X/métodos , Absceso Abdominal/diagnóstico por imagen , Adulto , Anciano , Catéteres , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Instrumentos Quirúrgicos
15.
World J Surg Oncol ; 13: 78, 2015 Feb 25.
Artículo en Inglés | MEDLINE | ID: mdl-25888888

RESUMEN

BACKGROUND: The diagnosis of pancreatic cystic neoplasms has become more accurate recently. In some cases, however, doubt remains regarding the lesion's malignant potential. CA 19-9 has long been identified as a reliable biomarker in differentiating pancreatic benign and malignant lesions, especially in non-jaundiced patients. CASE REPORT AND DISCUSSION: We report a case of a young female who presented with a mucinous lesion in the tail of the pancreas and a serum CA 19-9 over 1,000,000 U/mL. She was taken to surgery and had a distal pancreatectomy and splenectomy. Pathology reports showed only a mucinous cystadenoma. After 1 year of follow-up, her serum CA 19-9 was normal. Following that, the work-up in these lesions, the role of the biomarker in pancreatic adenocarcinoma and in the differentiation between benign and malignant lesions is discussed.


Asunto(s)
Biomarcadores de Tumor/sangre , Antígeno CA-19-9/sangre , Cistoadenoma Mucinoso/cirugía , Neoplasias Pancreáticas/cirugía , Adulto , Cistoadenoma Mucinoso/sangre , Cistoadenoma Mucinoso/patología , Femenino , Humanos , Pancreatectomía , Neoplasias Pancreáticas/sangre , Neoplasias Pancreáticas/patología , Pronóstico , Esplenectomía , Neoplasias Pancreáticas
16.
Radiat Oncol ; 7: 169, 2012 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-23068190

RESUMEN

BACKGROUND: Adjuvant chemoradiotherapy is part of a multimodality treatment approach in order to improve survival outcomes after surgery for gastric cancer. The aims of this study are to describe the results of gastrectomy and adjuvant chemoradiotherapy in patients treated in a single institution, and to identify prognostic factors that could determine which individuals would benefit from this treatment. METHODS: This retrospective study included patients with pathologically confirmed gastric adenocarcinoma who underwent surgical treatment with curative intent in a single cancer center in Brazil, between 1998 and 2008. Among 327 patients treated in this period, 142 were selected. Exclusion criteria were distant metastatic disease (M1), T1N0 tumors, different multimodality treatments and tumors of the gastric stump. Another 10 individuals were lost to follow-up and there were 3 postoperative deaths. The role of several clinical and pathological variables as prognostic factors was determined. RESULTS: D2-lymphadenectomy was performed in 90.8% of the patients, who had 5-year overall and disease-free survival of 58.9% and 55.7%. The interaction of N-category and N-ratio, extended resection and perineural invasion were independent prognostic factors for overall and disease-free survival. Adjuvant chemoradiotherapy was not associated with a significant improvement in survival. Patients with node-positive disease had improved survival with adjuvant chemoradiotherapy, especially when we grouped patients with N1 and N2 tumors and a higher N-ratio. These individuals had worse disease-free (30.3% vs. 48.9%) and overall survival (30.9% vs. 71.4%). CONCLUSION: N-category and N-ratio interaction, perineural invasion and extended resections were prognostic factors for survival in gastric cancer patients treated with D2-lymphadenectomy, but adjuvant chemoradiotherapy was not. There may be some benefit with this treatment in patients with node-positive disease and higher N-ratio.


Asunto(s)
Adenocarcinoma/terapia , Quimioradioterapia Adyuvante , Neoplasias Gástricas/terapia , Adenocarcinoma/mortalidad , Adenocarcinoma/patología , Adulto , Anciano , Anciano de 80 o más Años , Supervivencia sin Enfermedad , Femenino , Gastrectomía , Humanos , Estimación de Kaplan-Meier , Escisión del Ganglio Linfático , Masculino , Persona de Mediana Edad , Selección de Paciente , Pronóstico , Estudios Retrospectivos , Neoplasias Gástricas/mortalidad , Neoplasias Gástricas/patología , Resultado del Tratamiento , Adulto Joven
17.
World J Surg Oncol ; 10: 195, 2012 Sep 19.
Artículo en Inglés | MEDLINE | ID: mdl-22992263

RESUMEN

BACKGROUND: Gastric cancer relapse occurs in about 30% of the patients treated with gastrectomy and D2-lymphadenectomy, mainly as distant or peritoneal metastases. Hyperthermic intraperitoneal chemotherapy (HIPEC) has been associated with an improvement in survival and lower peritoneal recurrence, albeit with increased morbidity. The aim of this study is to report the preliminary results of the association of perioperative chemotherapy, radical surgery and HIPEC in high-risk gastric patients in a single institution. METHODS: Treatment protocol was started in 2007 and included patients younger than 65 years old, with good performance status and gastric adenocarcinoma with serosa involvement and lymph node metastases, located in the body or antrum. Patients should receive three preoperative cycles of DCF (Docetaxel 75 mg/m2, Cisplatin 75 mg/m2 and continuous intravenous infusion of 5-Fluorouracil 750 mg/m2 for 5 days), followed by gastric resection with D2-lymphadenectomy, hyperthermic intraperitoneal chemotherapy with Mytomicin C 34 mg/m2 and three more postoperative cycles of DCF. RESULTS: Ten patients were included between 2007 and 2011. Their median age was 47 years old and six were male. Nine were staged with cT4 cN + tumors and one as cT3 cN+. Nine patients completed all three preoperative chemotherapy cycles. Eight individuals were treated with a total gastrectomy and the other two had a distal gastrectomy, all having HIPEC. Postoperative morbidity was 50%, with no deaths. Regarding postoperative chemotherapy, only 5 patients completed three cycles. With a median follow-up of 25 months, three relapses were identified and 7 patients remain disease-free, two with more than 4 years of follow-up. CONCLUSION: The association of perioperative systemic and intraperitoneal chemotherapy plus radical surgery is a feasible multimodality treatment, with acceptable morbidity. With a longer follow-up and a larger group of patients, we hope to be able to determine if it also influences survival outcomes and patterns of recurrence. MINI-ABSTRACT: The association of perioperative chemotherapy, gastric resection and D2-lymphadenectomy and hyperthermic intraperitoneal chemotherapy proved to be associated with acceptable morbidity. For survival analysis, a longer follow-up is needed.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Quimioterapia del Cáncer por Perfusión Regional , Hipertermia Inducida , Neoplasias Gástricas/terapia , Adenocarcinoma/secundario , Adenocarcinoma/cirugía , Adenocarcinoma/terapia , Adulto , Femenino , Gastrectomía , Humanos , Masculino , Persona de Mediana Edad , Cavidad Peritoneal , Neoplasias Peritoneales/secundario , Neoplasias Peritoneales/terapia , Neoplasias Gástricas/patología , Neoplasias Gástricas/cirugía
18.
J Clin Oncol ; 29(22): 3030-6, 2011 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-21709195

RESUMEN

PURPOSE: The human epidermal growth factor receptor (HER) family consists of four members: ErbB-1 (HER1), ErbB-2 (HER2), ErbB-3 (HER3), and ErbB-4 (HER4). These receptors activate numerous downstream pathways in response to extracellular ligands, regulating diverse processes that include differentiation, migration, proliferation, and survival. Alterations in these genes play a role in the development and progression of many human cancers. In gastric carcinomas (GCs), expression of HER1 and HER2 is thought to be a prognostic factor and target of novel biologic agents. The effect of HER3 or HER4 expression in GC has not been sufficiently studied. In this study, we explored the gene and protein expression of the HER family in GC to establish new potential prognostic factors. PATIENTS AND METHODS: Immunohistochemistry and fluorescence in situ hybridization were performed in 221 patients with GC using tissue microarray. Correlation between the expression or amplification of HER genes and the clinicopathologic parameters was statistically analyzed. RESULTS: Alterations of members of the HER family were significantly associated with the parameters involved in tumor progression, including depth of tumor invasion, involved lymph nodes, and tumor stage. In addition, HER2 amplification and HER3 expression were significantly related to worse survival. CONCLUSION: These results reveal that all members of the HER family are expressed in GC. Furthermore, expression of HER2 and HER3 is a significant predictor of poor survival in GC. Therefore, the development of HER-targeted agents and agents targeting downstream signaling pathways provides new possibilities in the treatment of GC.


Asunto(s)
Biomarcadores de Tumor/metabolismo , Carcinoma/metabolismo , Receptor ErbB-2/metabolismo , Receptor ErbB-3/metabolismo , Neoplasias Gástricas/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma/mortalidad , Carcinoma/secundario , Carcinoma/terapia , Receptores ErbB/metabolismo , Femenino , Regulación Neoplásica de la Expresión Génica , Humanos , Inmunohistoquímica , Hibridación Fluorescente in Situ , Estimación de Kaplan-Meier , Metástasis Linfática , Masculino , Persona de Mediana Edad , Análisis Multivariante , Invasividad Neoplásica , Estadificación de Neoplasias , Valor Predictivo de las Pruebas , Pronóstico , Multimerización de Proteína , Receptor ErbB-4 , Neoplasias Gástricas/mortalidad , Neoplasias Gástricas/patología , Neoplasias Gástricas/terapia , Resultado del Tratamiento
19.
Hepatobiliary Pancreat Dis Int ; 9(6): 654-7, 2010 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-21134838

RESUMEN

BACKGROUND: Obstructive jaundice is a common condition in advanced digestive cancer. Palliative procedures can improve quality of life and allow patients to attempt a systemic treatment. Bilioenteric anastomosis is still the procedure of choice for patients in many centers. When a surgical bypass is not possible, biliary drainage can be done by placing endoscopic or transparietal stents, which are less durable methods even when an expandable stent is employed. METHODS: A 47-year-old male with an excellent clinical status and a previous cholecystectomy and an exploratory laparotomy for advanced gastric cancer was referred with obstructive jaundice. A preoperative CT scan showed a dilated bile duct and a small mass at the distal hepatic hilum. No other signs of metastasis were found. A surgical bilioenteric anastomosis was indicated. At surgery, a distal choledochal obstruction and a mesenteric retraction by a lymph node mass prevented the jejunum to ascend for a bilioenteric anastomosis. Surgically, an alternative bilioenteric bypass was performed by means of an ileal loop interposition between the bile duct and the jejunum. RESULT: The recovery of the patient was uneventful and his bilirubin levels normalized after one week. The patient was then referred for systemic chemotherapy. CONCLUSIONS: This alternative biliary bypass can be safely and easily performed, and may be a good alternative for patients already referred for surgery because of a better life expectancy and when the jejunum is not an alternative.


Asunto(s)
Procedimientos Quirúrgicos del Sistema Digestivo/métodos , Íleon/cirugía , Ictericia Obstructiva/etiología , Ictericia Obstructiva/cirugía , Neoplasias Gástricas/complicaciones , Anastomosis Quirúrgica/métodos , Conductos Biliares/cirugía , Humanos , Yeyuno/cirugía , Masculino , Persona de Mediana Edad
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA