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1.
Cancers (Basel) ; 16(4)2024 Feb 07.
Artículo en Inglés | MEDLINE | ID: mdl-38398089

RESUMEN

Perihilar cholangiocarcinoma (pCCA) is an uncommon malignancy with generally poor prognosis. Surgery is the primary curative treatment; however, the perioperative mortality and morbidity rates are high, with a low 5-year survival rate. Use of preoperative prognostic biomarkers to predict survival outcomes after surgery for pCCA are not well-established currently. This systematic review aimed to identify and summarise preoperative biomarkers associated with survival in pCCA, thereby potentially improving treatment decision-making. The Embase, Medline, and Cochrane databases were searched, and a systematic review was performed using the PRISMA guidelines. English-language studies examining the association between serum and/or tissue-derived biomarkers in pCCA and overall and/or disease-free survival were included. Our systematic review identified 64 biomarkers across 48 relevant studies. Raised serum CA19-9, bilirubin, CEA, neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR) and tumour MMP9, and low serum albumin were most associated with poorer survival; however, the cutoff values used widely varied. Several promising molecular markers with prognostic significance were also identified, including tumour HMGA2, MUC5AC/6, IDH1, PIWIL2, and DNA index. In conclusion, several biomarkers have been identified in serum and tumour specimens that prognosticate overall and disease-free survival after pCCA resection. These, however, require external validation in large cohort studies and/or in preoperatively obtained specimens, especially tissue biopsy, to recommend their use.

3.
ANZ J Surg ; 91(4): 590-596, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33369857

RESUMEN

BACKGROUND: Day-only laparoscopic cholecystectomy (DOLC) has been shown to be safe and feasible yet has not been widely implemented in Australia. This study explores the introduction of routine DOLC to Westmead Hospital, and highlights the barriers to its implementation. METHODS: Routine day-only cholecystectomy protocol was introduced at Westmead Hospital in 2014. A retrospective review of patients who underwent elective laparoscopic cholecystectomy during a 12-month period in 2014 was compared to a 12-month period in 2018, to examine the changes in practice after implementation of a unit protocol. Data were collected on patient demographics, admission category, outcomes and re-presentations. RESULTS: A total of 282 patients were included in the study, of these 169 were booked as day procedures, with 124 (73%) successfully discharged on the same day. There was a significant increase in the proportion of patients booked as day-only from 2014 to 2018 (48% versus 73%, P < 0.001). Day-only failure rates (unplanned overnight admissions), readmissions and complication rates were comparable between the two periods. The most common reason for unplanned overnight admissions were due to intraoperative findings (n = 28/45). CONCLUSION: Routine DOLC can be adopted in Australian hospitals without compromise to patient safety. Unplanned overnight admission is predominantly due to unexpected surgical pathology and can be reduced by protocols for the use of drains and planned outpatient endoscopic retrograde cholangiopancreatography. Unplanned outpatient review can be minimized by optimizing both intra- and post-operative pain management. Individual surgeon and anaesthetist preferences remain an obstacle to a standardized protocol in the Australian setting.


Asunto(s)
Procedimientos Quirúrgicos Ambulatorios , Colecistectomía Laparoscópica , Australia/epidemiología , Procedimientos Quirúrgicos Electivos , Humanos , Estudios Retrospectivos
4.
Front Immunol ; 10: 2674, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31798594

RESUMEN

Lambda interferons (IFN-λs) are a major component of the innate immune defense to viruses, bacteria, and fungi. In human liver, IFN-λ not only drives antiviral responses, but also promotes inflammation and fibrosis in viral and non-viral diseases. Here we demonstrate that macrophages are primary responders to IFN-λ, uniquely positioned to bridge the gap between IFN-λ producing cells and lymphocyte populations that are not intrinsically responsive to IFN-λ. While CD14+ monocytes do not express the IFN-λ receptor, IFNLR1, sensitivity is quickly gained upon differentiation to macrophages in vitro. IFN-λ stimulates macrophage cytotoxicity and phagocytosis as well as the secretion of pro-inflammatory cytokines and interferon stimulated genes that mediate immune cell chemotaxis and effector functions. In particular, IFN-λ induced CCR5 and CXCR3 chemokines, stimulating T and NK cell migration, as well as subsequent NK cell cytotoxicity. Using immunofluorescence and cell sorting techniques, we confirmed that human liver macrophages expressing CD14 and CD68 are highly responsive to IFN-λ ex vivo. Together, these data highlight a novel role for macrophages in shaping IFN-λ dependent immune responses both directly through pro-inflammatory activity and indirectly by recruiting and activating IFN-λ unresponsive lymphocytes.


Asunto(s)
Interferones/inmunología , Macrófagos/inmunología , Degranulación de la Célula , Diferenciación Celular , Movimiento Celular , Células Cultivadas , Hepatitis C/inmunología , Humanos , Interferones/genética , Células Asesinas Naturales/inmunología , Hígado/inmunología , Monocitos/inmunología , Fagocitosis
5.
Surg Innov ; 24(1): 49-54, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-27678383

RESUMEN

INTRODUCTION: Achieving primary fascial closure after damage control laparostomy can be challenging. A number of devices are in use, with none having yet emerged as best practice. In July 2013, at Westmead Hospital, we started using the abdominal reapproximation anchor (ABRA; Canica Design, Almonte, Ontario, Canada) device. We report on our experience. METHODS: A retrospective review of medical records for patients who had open abdomens managed with the ABRA device between July to December 2013 was done. Data extracted included age, sex, body mass index (BMI), reason for the open abdomen, Acute Physiology and Chronic Health Evaluation II (APACHE II) score, number of laparostomies prior to ABRA placement, duration of placement, device complications, length of hospital and intensive care unit (ICU) stay, and outcomes. RESULTS: Four cases of open abdomens managed using the ABRA device were identified, with 3 a consequence of intra-abdominal sepsis and 1 a consequence of penetrating trauma. Mean BMI was 33.5 kg/m2, APACHE II score was 14.5, duration with open abdomen prior to ABRA placement was 11.75 days, duration with ABRA in situ was 9 days, duration of hospital stay was 64.25 days, and ICU stay was 37.75 days. Three patients (75%) achieved fascial closure, and 1 achieved skin closure. No incidences of enterocutaneous fistulae occurred. CONCLUSION: The ABRA is a unique emerging alternative to aid in achieving fascial closure in patients managed with open abdomens. Our case series demonstrates that it can be used effectively in selected patients. Studies are needed to compare its efficacy with more traditional methods.


Asunto(s)
Técnicas de Cierre de Herida Abdominal/instrumentación , Laparotomía/efectos adversos , Tracción/instrumentación , Pared Abdominal/cirugía , Adulto , Anciano , Índice de Masa Corporal , Femenino , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
6.
ANZ J Surg ; 85(11): 854-9, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25644962

RESUMEN

BACKGROUND: According to the Tokyo Guidelines, recommendation on management of moderate and severe cholecystitis are cholecystostomy in severe cases and either cholecystostomy or emergency cholecystectomy in moderate cases depending on surgical experience. The rationale for this is that percutaneous cholecystostomy is a short procedure while laparoscopic cholecystectomy may be associated with a larger physiological insult. The aim of this study was to determine the safety and efficacy of cholecystectomy in moderate and severe acute calculous cholecystitis (ACC) at our institution. METHODS: A retrospective review of patients presenting to Westmead Hospital with ACC between 2011 and 2012 was performed. Patients were classified according to the Tokyo Guidelines and only grade II and grade III patients were included. Clinical and complication details were recorded from the clinical notes. RESULTS: Of the 84 patients, 60 had grade II and 24 had grade III ACC. The mean age was 52 years and 59% were female. In both groups, index cholecystectomy was performed in 88% of patients. None of the grade II ACC patients and three (12%) of grade III ACC underwent cholecystostomy. Length of stay (5 versus 12, P < 0.001) and conversion rate (2% versus 27%, P = 0.006) was higher in the grade III group. There were no deaths in patient who underwent surgery in either group. Severe complications were not significantly different (2% versus 9%, P = 0.219). CONCLUSION: Index cholecystectomy is feasible with low morbidity and no mortality even in severe ACC. Emergency cholecystectomy in the setting of severe cholecystitis appear to be safe and technically feasible option.


Asunto(s)
Colecistitis Aguda/cirugía , Colecistostomía , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Colecistectomía Laparoscópica , Colecistitis Aguda/diagnóstico , Estudios de Factibilidad , Femenino , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/epidemiología , Estudios Retrospectivos , Índice de Severidad de la Enfermedad , Resultado del Tratamiento , Adulto Joven
7.
HPB (Oxford) ; 17(2): 99-112, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24888393

RESUMEN

BACKGROUND: Many authors advocate lipase as the preferred serological test for the diagnosis of pancreatitis and a cut-off level of three or more times the upper limit of normal (ULN) is often quoted. The literature contains no systematic review that explores alternative causes of a lipase level over three times as high as the ULN. Such a review was therefore the objective of this study. METHODS: The EMBASE and MEDLINE databases (1985 to August 2013) were searched for all eligible articles. Predetermined data were extracted and independently analysed by two reviewers. RESULTS: In total, data from 58 studies were included in the final analysis. The following causes other than pancreatitis of lipase levels exceeding three times the ULN were found: reduced clearance of lipase caused by renal impairment or macrolipase formation; other hepatobiliary, gastroduodenal, intestinal and neoplastic causes; critical illness, including neurosurgical pathology; alternative pancreatic diagnoses, such as non-pathological pancreatic hyperenzymaemia, and miscellaneous causes such as diabetes, drugs and infections. CONCLUSIONS: A series of differential diagnoses for significant serum lipase elevations (i.e. exceeding three times the ULN) has been provided by this study. Clinicians should utilize this knowledge in the interpretation and management of patients who have lipase levels over three times as high as the ULN, remaining vigilant for an alternative diagnosis to pancreatitis. The medical officer should be aware of the possibility of incorrect diagnosis in the asymptomatic patient.


Asunto(s)
Enfermedades del Sistema Digestivo/diagnóstico , Lipasa/sangre , Rotura de la Aorta/diagnóstico , Enfermedades Asintomáticas , Colitis Ulcerosa/diagnóstico , Enfermedad Crítica , Diagnóstico Diferencial , Humanos , Enfermedades Inflamatorias del Intestino/diagnóstico , Enfermedades Renales/diagnóstico , Enfermedades Pancreáticas/diagnóstico , Pancreatitis/diagnóstico
9.
J Gastrointest Surg ; 18(6): 1087-99, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24740486

RESUMEN

BACKGROUND: Laparoscopic distal gastrectomy has been increasingly utilized in the treatment of gastric adenocarcinoma. This study aims to compare the morbidity/mortality and postoperative outcomes of laparoscopic-assisted versus open distal gastrectomy since 2000. METHODS: A comprehensive search of MEDLINE and EMBASE was conducted including studies published between 2000 and present. RESULTS: Seventeen studies with a total of 7,109 distal gastrectomies (3,496 lap vs 3,613 open) were included. Across all studies, postoperative morbidity rates for laparoscopic gastrectomy were lower than that of open [median (range) 10 (0-36) % vs 17 (0-43) %]. Meta-analysis of postoperative morbidity rates in prospective studies only yielded pooled odds ratio of 0.52 (95 % CI 0.33-0.81) (P = 0.004). In-hospital mortality rates were comparable between the two (range: laparoscopic 0-3.3 vs open 0-6.7 %). The long-term oncological outcomes of resection were difficult to analyze given variable reporting but appeared similar between the two. Meta-analysis of prospective studies showed that laparoscopic-assisted distal gastrectomy was associated with significantly shorter hospital length of stay [standard mean difference (SMD) = -0.78 (95 % CI = -1.0 to -0.56)], comparable intraoperative bleeding [SMD = 0.64 (95 % CI = -1.3-0.0430) P = 0.066] and longer operative time compared to open gastrectomy [1.9 (95 % CI 0.05-3.8) P = 0.045, with P < 0.001]. CONCLUSION: This study supports the use of laparoscopic-assisted distal gastrectomy for treatment of gastric adenocarcinoma with evidence of comparable, if not better, short-term postoperative parameters when compared to open distal gastrectomy. The long-term oncological outcomes appear similar but may require more evaluation.


Asunto(s)
Gastrectomía/métodos , Laparoscopía , Neoplasias Gástricas/cirugía , Pérdida de Sangre Quirúrgica , Gastrectomía/efectos adversos , Gastrectomía/mortalidad , Mortalidad Hospitalaria , Humanos , Laparoscopía/efectos adversos , Laparoscopía/mortalidad , Tiempo de Internación , Tempo Operativo , Tasa de Supervivencia , Resultado del Tratamiento
10.
HPB (Oxford) ; 16(2): 101-8, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23509899

RESUMEN

BACKGROUND: Since the liver metastases rather than the colorectal cancer itself is the main determinant of patient's survival, the 'Liver-First Approach (LFA)' with upfront chemotherapy followed by a hepatic resection of colorectal liver metastases (CLM) and finally a colorectal cancer resection was proposed. The aim of this review was to analyse the evidence for LFA in patients with colorectal cancer and synchronous CLM. METHODS: A literature search of databases (MEDLINE and EMBASE) to identify published studies of LFA in patients with colorectal cancer and synchronous CLM was undertaken focussing on the peri-operative regimens of LFA and survival outcomes. RESULTS: Three observational studies and one retrospective cohort study were included for review. A total of 121 patients with colorectal cancer and synchronous CLM were selected for LFA. Pre-operative chemotherapy was used in 99% of patients. One hundred and twelve of the initial 121 patients (93%) underwent a hepatic resection of CLM. In total, 60% had a major liver resection and the R0 resection rate was 93%. Post-operative morbidity and mortality after the hepatic resection were 20% and 1%, respectively. Ultimately, 89 of the initial 121 (74%) patients underwent a colorectal cancer resection. Post-operative morbidity and mortality after a colorectal resection were 50% and 6%, respectively. The median overall survival was 40 months (range 19-50) with a recurrence rate of 52%. CONCLUSIONS: Current evidence suggests that LFA is safe and feasible in selected patients with colorectal cancer and synchronous CLM. Future studies are required to further define patient selection criteria for LFA and the exact role of LFA in the management of synchronous CLM.


Asunto(s)
Neoplasias Colorrectales/patología , Neoplasias Colorrectales/terapia , Neoplasias Hepáticas/secundario , Neoplasias Hepáticas/terapia , Recurrencia Local de Neoplasia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Quimioterapia Adyuvante , Colectomía , Neoplasias Colorrectales/mortalidad , Medicina Basada en la Evidencia , Hepatectomía , Humanos , Neoplasias Hepáticas/mortalidad , Cuidados Preoperatorios , Análisis de Supervivencia , Factores de Tiempo , Resultado del Tratamiento , Reino Unido/epidemiología
11.
HPB (Oxford) ; 16(1): 12-9, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23461716

RESUMEN

BACKGROUND: By attenuating the systemic inflammatory response to major surgery, the pre-operative administration of steroids may reduce the incidence of complications. METHODS: A systematic review was conducted to identify randomized controlled trials (RCT) comparing pre-operative steroid administration with placebo during a liver resection. Meta-analyses were performed. RESULTS: Five RCTs were identified including a total of 379 patients. Pre-operative steroids were associated with statistically significant reductions in the levels of serum bilirubin and interleukin 6 (IL-6) on post-operative day one. There was a trend towards a lower incidence of post-operative complications and prothrombin time (PT), but this did not reach statistical significance. CONCLUSION: Pre-operative steroids may be associated with a clinically significant benefit in liver resection.


Asunto(s)
Hepatectomía/efectos adversos , Esteroides/administración & dosificación , Síndrome de Respuesta Inflamatoria Sistémica/prevención & control , Bilirrubina/sangre , Biomarcadores/sangre , Distribución de Chi-Cuadrado , Esquema de Medicación , Humanos , Mediadores de Inflamación/sangre , Interleucina-6/sangre , Oportunidad Relativa , Cuidados Preoperatorios , Tiempo de Protrombina , Factores de Riesgo , Síndrome de Respuesta Inflamatoria Sistémica/sangre , Síndrome de Respuesta Inflamatoria Sistémica/etiología , Resultado del Tratamiento
12.
Melanoma Res ; 24(1): 1-10, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24300091

RESUMEN

Melanoma metastatic to the liver has a very poor prognosis, and has traditionally been treated using systemic chemotherapy with limited efficacy. Surgery is increasingly being explored as a therapeutic option for melanoma liver metastases, with varying levels of success. A systematic review was undertaken to explore the short-term and long-term outcomes associated with hepatectomy for melanoma metastases, in addition to identifying prognostic factors favouring increased survival. All eligible studies were identified through an electronic search of Medline and Embase (January 1990-March 2013). Each study was independently analysed by two reviewers, with relevant data extracted and tabulated according to predetermined criteria. Thirteen studies were selected that fulfilled the selection criteria, with a total of 551 patients undergoing hepatic resection for melanoma metastases. Metastases to the liver occurred at a median interval of 54 months. The median perioperative morbidity and mortality were 10% (range 0-28.6%) and 0% (range 0-7.1%), respectively. The median overall survival for operative patients was 24 months, with median survival being greater in the R0 resection group (25 months; range 9.5-65.6 months) compared with the R1/2 resection group (16 months; range 11.7-29 months). Overall median 1-, 3- and 5-year survival rates were 70% (range 39-100%), 36% (range 10.2-53%) and 24% (range 3-53%), respectively. Positive prognostic factors may include single hepatic metastases, a longer time to development of hepatic metastases and R0 resection. Hepatic resection for metastatic melanoma might confer a distinct survival benefit in a select group of patients, although disease recurrence is the norm.


Asunto(s)
Neoplasias Hepáticas/secundario , Neoplasias Hepáticas/cirugía , Melanoma/patología , Melanoma/cirugía , Hepatectomía , Humanos , Pronóstico , Resultado del Tratamiento
13.
J Gastrointest Surg ; 17(11): 1984-96, 2013 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-24002759

RESUMEN

BACKGROUND: There is an inverse relationship between hospital and surgeon volume and mortality in many types of complex surgery. The aim of this paper is to investigate the volume effect on outcomes of liver surgery. METHODS: A systematic review and meta-analysis was performed. A literature search was conducted using Medline and EMBASE from 1995 to 2012. A random effects model was used. RESULTS: Seventeen studies were selected for detailed analysis. Definition of a high-volume institution varied from 2 to more than 33 procedures per year. The pooled odds ratio of mortality rate in low- vs high-volume centres was 2.0 [95 % confidence interval (CI), 1.6-2.4; P < 0.001]. Some studies divided centres into more than two groups and compared the highest and lowest volume groups. The pooled odds ratio of mortality rate for this comparison type was 3.2 (95 % CI, 1.7-5.8; P < 0.001). Funnel plots suggest possible publication bias. There was inadequate data to compare morbidity. Only two of seven studies demonstrated a shorter length of stay in the high-volume centres. There was no convincing volume effect on long-term survival. CONCLUSIONS: This study suggests a strong relationship between volume and perioperative mortality. No difference in morbidity, length of stay or survival was demonstrated.


Asunto(s)
Hepatectomía/mortalidad , Hospitales de Alto Volumen/estadística & datos numéricos , Hospitales de Bajo Volumen/estadística & datos numéricos , Humanos , Tiempo de Internación , Análisis de Supervivencia
14.
J Vasc Interv Radiol ; 24(8): 1209-17, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23885916

RESUMEN

PURPOSE: For patients with unresectable colorectal liver metastasis (CRLM), transarterial embolization with the use of drug-eluting beads with irinotecan (DEBIRI) represents a novel alternative to systemic chemotherapy or local treatments alone. The present systematic review evaluates available data on the efficacy and safety of DEBIRI embolization. MATERIALS AND METHODS: A comprehensive search of medical literature identified studies describing the use of DEBIRI in the treatment of CRLM. Data describing adverse events, pharmacokinetics, tumor response, and overall survival were collected. RESULTS: Five observational studies and one randomized controlled trial (RCT) were reviewed. A total of 235 patients were included in the descriptive analysis of observational studies. Postembolization syndrome was the most common adverse event. Peak plasma levels of irinotecan were observed at 1-2 hours after administration. Wide variations in tumor response were observed. The median survival time ranged from 15.2 months to 25 months. In the RCT, treatment with DEBIRI was superior to systemic chemotherapy with 5-fluorouracil/leucovorin/irinotecan in terms of quality of life and progression-free survival. CONCLUSIONS: For patients with unresectable CRLM, particularly after failure to respond to first-line regimens, DEBIRI represents a novel alternative to systemic chemotherapy alone, transarterial embolization with other agents, or other local treatments (eg, microwave or radiofrequency ablation). In these reports, DEBIRI was safe and effective in the in the treatment of unresectable CRLM. Further RCTs comparing DEBIRI with alternative management strategies are required to define the optimal role for this treatment.


Asunto(s)
Antineoplásicos Fitogénicos/administración & dosificación , Camptotecina/análogos & derivados , Quimioembolización Terapéutica , Neoplasias Colorrectales/patología , Portadores de Fármacos , Neoplasias Hepáticas/secundario , Neoplasias Hepáticas/terapia , Antineoplásicos Fitogénicos/efectos adversos , Antineoplásicos Fitogénicos/farmacocinética , Camptotecina/administración & dosificación , Camptotecina/efectos adversos , Camptotecina/farmacocinética , Quimioembolización Terapéutica/efectos adversos , Quimioembolización Terapéutica/mortalidad , Neoplasias Colorrectales/mortalidad , Progresión de la Enfermedad , Supervivencia sin Enfermedad , Humanos , Irinotecán , Neoplasias Hepáticas/mortalidad , Calidad de Vida , Análisis de Supervivencia , Factores de Tiempo , Resultado del Tratamiento
15.
HPB (Oxford) ; 15(7): 483-91, 2013 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-23750490

RESUMEN

OBJECTIVES: Selected patients with unresectable colorectal liver metastases (CLM) may be rendered resectable using the two-stage hepatectomy (TSH) approach. This review was conducted with the aim of collating and evaluating published evidence for TSH in patients with initially unresectable CLM. METHODS: Searches of the MEDLINE and EMBASE databases were undertaken to identify studies of TSH in patients with initially unresectable CLM. Studies were required to focus on the perioperative treatment regimen, operative strategy, morbidity, technical success and survival outcomes. RESULTS: Ten observational studies were reviewed. A total of 459 patients with initially unresectable CLM were selected for the first stage of TSH. Preoperative chemotherapy was used in 88% of patients and achieved partial and stable response rates of 59% and 39%, respectively. Postoperative morbidity and mortality after the first stage of TSH were 17% and 0.5%, respectively. Portal vein embolization (PVE) was used in 76% of patients. Ultimately, 352 of the initial 459 (77%) patients underwent the second stage of TSH. Major liver resection was undertaken in 84% of patients; the negative margin (R0) resection rate was 75%. Postoperative morbidity and mortality after the second stage of TSH were 40% and 3%, respectively. Median overall survival was 37 months (range: 24-44 months) in patients who completed both stages of TSH. In patients who did not complete both stages of TSH, median survival was 16 months (range: 10-29 months). The 3-year disease-free survival rate was 20% (range: 6-27%). CONCLUSIONS: Two-stage hepatectomy is safe and effective in selected patients with initially unresectable CLM. Further studies are required to better define patient selection criteria for TSH and the exact roles of PVE and preoperative and interval chemotherapy.


Asunto(s)
Neoplasias Colorrectales/patología , Hepatectomía/métodos , Neoplasias Hepáticas/secundario , Neoplasias Hepáticas/cirugía , Quimioterapia Adyuvante , Neoplasias Colorrectales/mortalidad , Supervivencia sin Enfermedad , Embolización Terapéutica , Hepatectomía/efectos adversos , Hepatectomía/mortalidad , Humanos , Neoplasias Hepáticas/irrigación sanguínea , Neoplasias Hepáticas/mortalidad , Terapia Neoadyuvante , Selección de Paciente , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento
16.
J Gastrointest Surg ; 17(7): 1312-21, 2013 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-23525970

RESUMEN

BACKGROUND: Selected patients with recurrent colorectal liver metastases (CLM) may be resectable by repeat hepatectomy approach. In this review, we aim to collate and evaluate the published evidence for repeat hepatectomy in patients with recurrent CLM. METHODS: Searches of the Medline and Embase databases were undertaken to identify studies of repeat hepatectomy in patients with recurrent CLM focusing on the perioperative treatment regimen, operative strategy, morbidity, technical success and survival outcomes. RESULTS: Twenty-two observational studies were reviewed. A total of 1,610 patients underwent second hepatectomy for recurrent CLM. The median percentage of extra-hepatic disease was 15 % (range, 0-39 %). Preoperative chemotherapy was reported in 5/22 studies. Major liver resection was undertaken in 25 % (range, 9-59 %) of patients and the R0 resection rate was 90 % (range, 77-96 %). Postoperative morbidity and mortality after the second hepatectomy were 23 % and 1.2 %, respectively. Recurrence rate after second hepatectomy was 63.9 % (range, 42-91 %) with a median follow-up period of 32 months (range, 19-59 months). Median overall survival was 35 months (range, 19-56 months). The 3-year and 5-year overall survival rates were 55 % (range, 11-82 %) and 42 % (range, 31-73 %), respectively. CONCLUSION: Second hepatectomy is safe and feasible in selected patients with recurrent CLM and is associated with acceptable perioperative and survival outcomes. Future prospective studies are required to further define the patient selection criteria for repeat hepatectomy and the exact role of perioperative chemotherapy.


Asunto(s)
Neoplasias Colorrectales/patología , Hepatectomía , Neoplasias Hepáticas/secundario , Neoplasias Hepáticas/cirugía , Recurrencia Local de Neoplasia/cirugía , Humanos , Reoperación
17.
HPB (Oxford) ; 14(6): 355-64, 2012 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-22568411

RESUMEN

BACKGROUND: Portal triad clamping (PTC) is the most commonly used method of achieving vascular control during liver resection. However, the efficacy and safety of PTC, compared with those of other methods of vascular control, are uncertain. METHODS: A systematic review was conducted to identify randomized controlled trials (RCTs) comparing PTC with other methods of vascular control during liver resection. Endpoints included in-hospital mortality, need for transfusion, number of complications and length of hospital stay. Meta-analyses were performed using a random-effects model. RESULTS: Ten RCTs were identified; these included a total of 820 patients. No statistically significant differences between PTC and other forms of vascular control in liver resection were demonstrated. CONCLUSIONS: There is no evidence, on the basis of this meta-analysis of RCTs, of any difference between PTC and other forms of vascular control in liver resection.


Asunto(s)
Pérdida de Sangre Quirúrgica/prevención & control , Hepatectomía/métodos , Hígado/cirugía , Vena Porta/cirugía , Procedimientos Quirúrgicos Vasculares , Transfusión Sanguínea , Constricción , Hepatectomía/efectos adversos , Hepatectomía/mortalidad , Mortalidad Hospitalaria , Humanos , Hígado/irrigación sanguínea , Longevidad , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento , Procedimientos Quirúrgicos Vasculares/efectos adversos , Procedimientos Quirúrgicos Vasculares/mortalidad
18.
ANZ J Surg ; 82(3): 140-4, 2012 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-22510123

RESUMEN

BACKGROUND: Positron emission tomography/computed tomography (PET/CT) using F18-fluorodeoxyglucose has been shown to be valuable in the management of malignant disease. The aim of this study is to investigate the impact of this technique on the management of patients with resectable pancreatic tumours. METHODS: Thirty-six patients with 37 potentially resectable pancreatic tumours on diagnostic CT imaging underwent PET/CT scans. Operative findings, histological reports and/or clinical follow-up served as standard of reference. The impact of PET/CT on patient management was estimated by calculating the percentage of patients whose treatment plan was altered due to PET/CT. RESULTS: Pancreatic adenocarcinoma was diagnosed in 30 patients, neuroendocrine tumours in 3, mass-forming pancreatitis in 3 and serous cystadenoma in 1. The median standard uptake (max) value was 5.0 (range 2.2-12.0). Sensitivity and specificity of detecting extrapancreatic metastatic disease were 73% and 100%, respectively. Three occult liver metastases were detected at laparotomy following negative PET/CT. PET/CT findings influenced the management of 8 (22%) patients - 3 with liver metastases, 3 with bone metastases, 1 with lymph node metastases and 1 by identifying the benign appearance of the pancreatic tumour. CONCLUSION: PET/CT achieves a significant diagnostic impact in detecting extrapancreatic metastatic disease. F18-fluorodeoxyglucose PET/CT appears to be useful in assessing suspicious pancreatic masses.


Asunto(s)
Adenocarcinoma/diagnóstico por imagen , Cistadenoma Seroso/diagnóstico por imagen , Imagen Multimodal , Tumores Neuroendocrinos/diagnóstico por imagen , Neoplasias Pancreáticas/diagnóstico por imagen , Pancreatitis/diagnóstico por imagen , Tomografía de Emisión de Positrones , Tomografía Computarizada por Rayos X , Adenocarcinoma/patología , Adenocarcinoma/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias Óseas/diagnóstico por imagen , Neoplasias Óseas/secundario , Cistadenoma Seroso/patología , Cistadenoma Seroso/cirugía , Técnicas de Apoyo para la Decisión , Femenino , Fluorodesoxiglucosa F18 , Estudios de Seguimiento , Humanos , Neoplasias Hepáticas/diagnóstico por imagen , Neoplasias Hepáticas/secundario , Metástasis Linfática , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Tumores Neuroendocrinos/patología , Tumores Neuroendocrinos/cirugía , Pancreatectomía , Neoplasias Pancreáticas/patología , Neoplasias Pancreáticas/cirugía , Pancreatitis/patología , Pancreatitis/cirugía , Cuidados Preoperatorios , Radiofármacos , Estudios Retrospectivos , Sensibilidad y Especificidad
19.
HPB (Oxford) ; 14(5): 285-90, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22487065

RESUMEN

BACKGROUND: Hepatic resection is a potentially curative therapy for hepatocellular carcinoma (HCC), but recurrence of disease is very common. Few studies have reported 10-year actual survival rates following hepatic resection; instead, most have used actuarial measures based on the Kaplan-Meier method. This systematic review aims to document 10-year actual survival rates and to identify factors significant in determining prognosis. METHODS: A comprehensive search was undertaken of MEDLINE and EMBASE. Only studies reporting the absolute number of patients alive at 10 years after first resection for HCC were included; these figures were used to calculate the actual 10-year survival rate. A qualitative review and analysis of the prognostic factors identified in the included studies were performed. RESULTS: Fourteen studies, all of which were retrospective case series, including data on 4197 patients with HCC were analysed. Ten years following resection, 303 of these patients were alive. The 10-year actual survival rate was 7.2%, whereas the actuarial survival quoted from the same studies was 26.8%. Positive prognostic factors included better hepatic function, a wider surgical margin and the absence of satellite lesions. CONCLUSIONS: The actual long-term survival rate after resection of HCC is significantly inferior to reported actuarial survival rates. The Kaplan-Meier method of actuarial survival analysis tends to overestimate survival outcomes as a result of censorship of data and subgroup analysis.


Asunto(s)
Carcinoma Hepatocelular/cirugía , Hepatectomía , Neoplasias Hepáticas/cirugía , Adulto , Carcinoma Hepatocelular/mortalidad , Carcinoma Hepatocelular/patología , Femenino , Hepatectomía/efectos adversos , Hepatectomía/mortalidad , Humanos , Estimación de Kaplan-Meier , Neoplasias Hepáticas/mortalidad , Neoplasias Hepáticas/patología , Masculino , Persona de Mediana Edad , Análisis de Regresión , Reproducibilidad de los Resultados , Medición de Riesgo , Factores de Riesgo , Tasa de Supervivencia , Factores de Tiempo , Resultado del Tratamiento
20.
ANZ J Surg ; 82(5): 299-302, 2012 May.
Artículo en Inglés | MEDLINE | ID: mdl-22507693

RESUMEN

BACKGROUND: Torsion of kidney transplant refers to rotation of the kidney transplant graft around its vascular pedicle resulting in vascular compromise and infarction. It is a rare complication of kidney transplantation associated with a high rate of graft loss. Clinical presentation and diagnostic imaging modalities are non-specific, and surgical exploration is therefore often delayed. METHODS: We present a case report and review of the literature. Studies were identified by searching Medline and Embase from January 1954 to December 2010. Data was extracted regarding the clinical presentation, investigation, findings on surgical exploration, and treatment outcomes of patients with torsion of kidney transplant. RESULTS: Eight manuscripts with 16 cases of kidney torsion were found. Presenting symptoms were decreased renal function (13 cases), abdominal pain (10 cases), oliguria/anuria (9 cases), nausea and vomiting (4 cases), fever (3 cases), diarrhoea (3 cases), weight gain (2 cases), oedema (3 cases), fatigue (1 case) and impalpable graft (1 case). Investigations were Doppler sonography (11 cases), grey-scale sonography (7 cases), nuclear scintigraphy (5 cases), computed tomography scan (4 cases), and magnetic resonance imaging/magnetic resonance angiography (1 case). Of the 16 published cases of torsion, seven (44%) grafts were detorted and salvaged, three (19%) grafts were detorted but subsequently lost and six (38%) patients underwent immediate nephrectomy. CONCLUSIONS: A prompt consideration of the diagnosis of torsion of kidney transplant is required to prevent delay in surgical intervention. We recommend urgent Doppler ultrasound be used as first-line investigation, followed by prompt surgical exploration. We recommend the use of prophylactic nephropexy to prevent torsion.


Asunto(s)
Isquemia/etiología , Trasplante de Riñón/efectos adversos , Riñón/irrigación sanguínea , Anomalía Torsional/cirugía , Trasplantes/efectos adversos , Adulto , Humanos , Isquemia/diagnóstico , Fallo Renal Crónico/etiología , Masculino , Nefrectomía , Nefritis Intersticial/complicaciones , Anomalía Torsional/diagnóstico , Anomalía Torsional/etiología
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