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1.
BMC Nephrol ; 22(1): 347, 2021 10 21.
Artigo em Inglês | MEDLINE | ID: mdl-34674648

RESUMO

BACKGROUND: Coronary heart disease due to arteriosclerosis is the leading cause of death in type 1 diabetic patients with end-stage renal disease (ESRD). The aim of this study was to evaluate the effect of simultaneous pancreas kidney transplantation (SPKT) compared to kidney transplantation alone (KTA) on survival, cardiovascular function and metabolic outcomes. METHODS: A cohort of 127 insulin-dependent diabetes mellitus (IDDM) patients with ESRD who underwent either SPKT (n = 100) or KTA (n = 27) between 1998 and 2019 at the University Hospital of Leipzig were retrospectively evaluated with regard to cardiovascular and metabolic function/outcomes as well as survival rates. An additional focus was placed on the echocardiographic assessment of systolic and diastolic cardiac function pretransplant and during follow-up. To avoid selection bias, a 2:1 propensity score matching analysis (PSM) was performed. RESULTS: After PSM, a total of 63 patients were identified; 42 patients underwent SPKT, and 21 patients received KTA. Compared with the KTA group, SPKT recipients received organs from younger donors (p < 0.05) and donor BMI was higher (p = 0.09). The risk factor-adjusted hazard ratio for mortality in SPKT recipients compared to KTA recipients was 0.63 (CI: 0.49-0.89; P < 0.05). The incidence of pretransplant cardiovascular events was higher in the KTA group (KTA: n = 10, 47% versus SPKT: n = 10, 23%; p = 0.06), but this difference was not significant. However, the occurrence of cardiovascular events in the SPKT group (n = 3, 7%) was significantly diminished after transplantation compared to that in the KTA recipients (n = 6, 28%; p = 0.02). The cardiovascular death rate was higher in KTA recipients (19%) than in SPK recipients with functioning grafts (3.3%) and comparable to that in patients with failed SPKT (16.7%) (p = 0.16). In line with pretransplant values, SPKT recipients showed significant improvements in Hb1ac values (p = 0.001), blood pressure control (p = < 0.005) and low-density lipoprotein/high-density lipoprotein (LDL/HDL) ratio (p = < 0.005) 5 years after transplantation. With regard to echocardiographic assessment, SPKT recipients showed significant improvements in left ventricular systolic parameters during follow-up. CONCLUSIONS: Normoglycaemia and improvement of lipid metabolism and blood pressure control achieved by successful SPKT are associated with beneficial effects on survival, cardiovascular outcomes and systolic left ventricular cardiac function. Future studies with larger samples are needed to make predictions regarding cardiovascular events and graft survival.


Assuntos
Diabetes Mellitus Tipo 1/cirurgia , Falência Renal Crônica/cirurgia , Transplante de Rim , Transplante de Pâncreas , Doenças Cardiovasculares/epidemiologia , Terapia Combinada , Diabetes Mellitus Tipo 1/complicações , Feminino , Humanos , Falência Renal Crônica/complicações , Transplante de Rim/métodos , Masculino , Pessoa de Meia-Idade , Transplante de Pâncreas/métodos , Complicações Pós-Operatórias/epidemiologia , Pontuação de Propensão , Estudos Retrospectivos , Resultado do Tratamento
2.
Zentralbl Chir ; 141(4): 397-404, 2016 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-25525948

RESUMO

BACKGROUND: Retrospective analyses have shown a 20-40 % incidence of R1 resection in hilar cholangiocarcinoma, which therefore represents a significant issue to be addressed. METHODS: We have reviewed the literature on the impact of R1 resection in hilar cholangiocarcinomas and on possible surgical options to increase the rate of complete tumour resections. RESULTS: To minimise the rate of R1 resections a preoperative risk assessment concerning the predisposed anatomic locations is required. During planning of the surgical strategy, liver function plays a central role prior to right-sided hemihepatectomies. Due to the loss of a high amount of functional liver parenchyma, contralateral portal vein embolisation is often used prior to right trisectionectomies. For left-sided hepatectomies the management of the right hepatic artery is fundamental. The right hepatic artery has a very close contact to the tumour region, although arterial invasion is rarely seen. However, the risk of manifest or occult R1 resection is relatively high along the right artery. In selected cases an arterial resection might be considered, but this increases the risk of postoperative complications. Arterial resection might be performed either via direct anastomosis or by using an interposition graft. As reserve procedures preoperative embolisation of the hepatic artery without reconstruction or an arterialisation of the portal vein are available. However, the latter two procedures come along with an increased rate of biliary complications. In selected lymph-node negative patients with irresectable hilar cholangiocarcinoma liver transplantation might be considered. CONCLUSION: Despite significant advances in surgical technique, R1 resection remains a problem, which is aggravated by the lack of evidence-based adjuvant measures.


Assuntos
Neoplasias dos Ductos Biliares/cirurgia , Hepatectomia/métodos , Tumor de Klatskin/cirurgia , Margens de Excisão , Neoplasias dos Ductos Biliares/irrigação sanguínea , Neoplasias dos Ductos Biliares/patologia , Implante de Prótese Vascular/métodos , Embolização Terapêutica , Artéria Hepática/patologia , Artéria Hepática/cirurgia , Humanos , Tumor de Klatskin/irrigação sanguínea , Tumor de Klatskin/patologia , Testes de Função Hepática , Transplante de Fígado/métodos , Veia Porta/patologia , Veia Porta/cirurgia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/prevenção & controle , Cuidados Pré-Operatórios , Prognóstico , Estudos Retrospectivos , Medição de Risco , Fatores de Risco
3.
Langenbecks Arch Surg ; 399(6): 725-33, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24880345

RESUMO

BACKGROUND: Despite improvements in liver surgery over the past decades, hemostasis during hepatic resections remains challenging. This multicenter randomized study compares the hemostatic effect of a collagen hemostat vs. a carrier-bound fibrin sealant after hepatic resection. METHODS: Patients scheduled for elective liver resection were randomized intraoperatively to receive either the collagen hemostat (COLL) or the carrier-bound fibrin sealant (CBFS) for secondary hemostasis. The primary endpoint was the proportion of patients with hemostasis after 3 min. Secondary parameters were the proportions of patients with hemostasis after 5 and 10 min, the total time to hemostasis, and the complication rates during a 3 months follow-up period. RESULTS: A total of 128 patients were included. In the COLL group, 53 out of 61 patients (86.9 %) achieved complete hemostasis within 3 min after application of the hemostat compared to 52 out of 65 patients (80.0 %) in the CBFS group. The 95 % confidence interval for this difference [-6.0 %, 19.8 %] does not include the lower noninferiority margin (-10 %). Thus, the COLL treatment can be regarded as noninferior to the comparator. The proportions of patients with hemostasis after 3, 5, and 10 min were not significantly different between the two study arms. Postoperative mortality and morbidity were similar in both treatment groups. CONCLUSION: The collagen hemostat is as effective as the carrier-bound fibrin sealant in obtaining secondary hemostasis during liver resection with a comparable complication rate.


Assuntos
Perda Sanguínea Cirúrgica/prevenção & controle , Colágeno/administração & dosagem , Hemostasia Cirúrgica , Hemostáticos/administração & dosagem , Hepatectomia/efeitos adversos , Hepatopatias/cirurgia , Idoso , Feminino , Humanos , Hepatopatias/patologia , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
4.
Am J Transplant ; 13(2): 253-65, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23331505

RESUMO

Due to a vulnerable blood supply of the bile ducts, biliary complications are a major source of morbidity after liver transplantation (LT). Manifestation is either seen at the anastomotic region or at multiple locations of the donor biliary system, termed as nonanastomotic biliary strictures. Major risk factors include old donor age, marginal grafts and prolonged ischemia time. Moreover, partial LT or living donor liver transplantation (LDLT) and donation after cardiac death (DCD) bear a markedly higher risk of biliary complications. Especially accumulation of several risk factors is critical and should be avoided. Prophylaxis is still a major issue; however no gold standard is established so far, since many risk factors cannot be influenced directly. The diagnostic workup is mostly started with noninvasive imaging studies namely MRI and MRCP, but direct cholangiography still remains the gold standard. Especially nonanastomotic strictures require a multidisciplinary treatment approach. The primary management of anastomotic strictures is mainly interventional. However, surgical revision is finally indicated in a significant number of cases. Using adequate treatment algorithms, a very high success rate can be achieved in anastomotic complications, but in nonanastomotic strictures a relevant number of graft failures are still inevitable.


Assuntos
Ductos Biliares/patologia , Transplante de Fígado/efeitos adversos , Transplante de Fígado/métodos , Adulto , Algoritmos , Anastomose Cirúrgica , Doenças dos Ductos Biliares/etiologia , Sistema Biliar , Criança , Colangiografia/métodos , Constrição Patológica , Morte , Sobrevivência de Enxerto , Humanos , Fígado/irrigação sanguínea , Imageamento por Ressonância Magnética/métodos , Fenótipo , Fatores de Risco
5.
Am J Transplant ; 13(9): 2384-94, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23915357

RESUMO

With excellent short-term survival in liver transplantation (LT), we now focus on long-term outcome and report the first European single-center 20-year survival data. Three hundred thirty-seven LT were performed in 313 patients (09/88-12/92). Impact on long-term outcome was studied and a comparison to life expectancy of matched normal population was performed. A detailed analysis of 20-years follow-up concerning overweight (HBMI), hypertension (HTN), diabetes (HGL), hyperlipidemia (HLIP) and moderately or severely impaired renal function (MIRF, SIRF) is presented. Patient and graft survival at 1, 10, 20 years were 88.4%, 72.7%, 52.5% and 83.7%, 64.7% and 46.6%, respectively. Excluding 1-year mortality, survival in the elderly LT recipients was similar to normal population. Primary indication (p < 0.001), age (p < 0.001), gender (p = 0.017), impaired renal function at 6 months (p < 0.001) and retransplantation (p = 0.034) had significant impact on patient survival. Recurrent disease (21.3%), infection (20.6%) and de novo malignancy (19.9%) were the most common causes of death. Prevalence of HTN (57.3-85.2%, p < 0.001), MIRF (41.8-55.2%, p = 0.01) and HBMI (33.2-45%, p = 0.014) increased throughout follow-up, while prevalence of HLIP (78.0-47.6%, p < 0.001) declined. LT has conquered many barriers to achieve these outstanding long-term results. However, much work is needed to combat recurrent disease and side effects of immunosuppression (IS).


Assuntos
Transplante de Fígado/mortalidade , Adolescente , Adulto , Idoso , Índice de Massa Corporal , Feminino , Seguimentos , Alemanha/epidemiologia , Sobrevivência de Enxerto , Humanos , Hiperlipidemias/epidemiologia , Hipertensão/epidemiologia , Terapia de Imunossupressão/efeitos adversos , Nefropatias/epidemiologia , Masculino , Pessoa de Meia-Idade , Reoperação/estatística & dados numéricos , Estudos Retrospectivos
6.
Colorectal Dis ; 15(12): 1529-36, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24034257

RESUMO

AIM: The object of this study was to describe the course of Fournier's gangrene and assess quality of life in a group of affected patients. METHOD: We evaluated patients who received inpatient treatment for Fournier's gangrene at five hospitals in northern Germany from 1995 to 2010. Surviving patients were asked to take part in a clinical follow-up and complete the Short-Form 36 (SF-36) quality-of-life questionnaire and a disease-specific questionnaire including a physical examination. RESULTS: Of the 86 patients, 72 (83.7%) were men. The mean age of the patients was 57.9 ± 13.9 (25-89) years. The mean length of hospital stay was 52.0 ± 54.0 (1-329) days. Fourteen (16.3%) patients (eight men) died primarily from Fournier's gangrene. The most common aetiological event was anogenital abscess formation (n = 24; 27.9%). Seventy-one (82.5%) patients had a mixed polymicrobial infection. SF-36 physical role functioning (P = 0.010), physical functioning (P = 0.008), general health (P = 0.010) and physical health summary (P = 0.006) scores were significantly lower than those of the normal population. Deterioration in sexual function was reported by 65% of the patients. CONCLUSION: Patients with Fournier's gangrene experience persistent physical and mental health problems for a long period of time following their primary hospital stay and must receive long-term care from a variety of specialists, otherwise the disease leads to an increase in the duration of morbidity and a decrease in quality of life.


Assuntos
Antibacterianos/uso terapêutico , Coinfecção/terapia , Desbridamento , Fasciite Necrosante/terapia , Gangrena de Fournier/terapia , Doenças dos Genitais Femininos/terapia , Qualidade de Vida , Adulto , Idoso , Idoso de 80 Anos ou mais , Infecções por Bacteroidaceae/complicações , Infecções por Bacteroidaceae/psicologia , Infecções por Bacteroidaceae/terapia , Coinfecção/complicações , Coinfecção/psicologia , Infecções por Enterobacteriaceae/complicações , Infecções por Enterobacteriaceae/psicologia , Infecções por Enterobacteriaceae/terapia , Fasciite Necrosante/complicações , Fasciite Necrosante/psicologia , Feminino , Seguimentos , Gangrena de Fournier/complicações , Gangrena de Fournier/psicologia , Doenças dos Genitais Femininos/complicações , Doenças dos Genitais Femininos/psicologia , Humanos , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Infecções por Pseudomonas/complicações , Infecções por Pseudomonas/psicologia , Infecções por Pseudomonas/terapia , Estudos Retrospectivos , Disfunções Sexuais Fisiológicas/etiologia , Disfunções Sexuais Fisiológicas/psicologia , Infecções Estafilocócicas/complicações , Infecções Estafilocócicas/psicologia , Infecções Estafilocócicas/terapia , Infecções Estreptocócicas/complicações , Infecções Estreptocócicas/psicologia , Infecções Estreptocócicas/terapia , Resultado do Tratamento
7.
Dig Dis Sci ; 58(8): 2399-405, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23525734

RESUMO

BACKGROUND: Effective and tolerable chemotherapy with gemcitabine and cisplatin for advanced biliary tract cancer (BTC) has been established recently. However, overall prognosis is still poor, and additional therapeutic approaches are needed for patients with locally advanced, irresectable and/or pretreated tumors. Hepatic arterial infusion (HAI) of chemotherapy represents a safe and well-established treatment modality, but data on its use in patients with BTC are still sparse. METHODS: Patients with irresectable BTC predominant to the liver were included in a prospective, open phase II study investigating HAI provided through interventionally implanted port catheters. Intraarterial chemotherapy consisted of biweekly oxaliplatin (O) 85 mg/m(2) and folinic acid (F) 170 mg/m(2) with 5-FU (F) 600 mg/m(2). RESULTS: Between 2004 and 2010, 37 patients were enrolled. A total of 432 cycles of HAI were applied with a median of 9 (range 1-46) cycles. Objective response rate was 16 %, and tumor control was achieved in 24 of 37 (65 %) patients. Median progression-free survival was 6.5 months (range 0.5-26.0; 95 % CI 4.3-8.7), median overall survival was 13.5 (range 0.9-50.7; 95 % CI 11.1-15.9) months. The most frequent adverse event was sensory neuropathy grade 1/2 in 10/14 patients. CONCLUSIONS: Using a minimal invasive technique, repetitive HAI with OFF is feasible and results in clinically relevant tumor control with low toxicity in patients with liver predominant advanced BTC.


Assuntos
Neoplasias do Sistema Biliar/tratamento farmacológico , Fluoruracila/uso terapêutico , Leucovorina/uso terapêutico , Fígado/irrigação sanguínea , Compostos Organoplatínicos/uso terapêutico , Adulto , Idoso , Antineoplásicos/administração & dosagem , Antineoplásicos/uso terapêutico , Esquema de Medicação , Quimioterapia Combinada , Feminino , Fluoruracila/administração & dosagem , Humanos , Leucovorina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Compostos Organoplatínicos/administração & dosagem , Oxaliplatina
8.
World J Surg ; 37(11): 2629-34, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23892726

RESUMO

BACKGROUND: Improved surgical techniques, substantial preoperative diagnostics, and advanced perioperative management permit extensive and complex liver resection. Thus, hepatic malignancies that would have been considered inoperable some years ago may be curatively resected today. Despite all this progress, biliary leakage remains a clinically relevant issue, especially after extended liver resection. Intraoperative decompression of bile ducts by means of distinct biliary drains is controversial. Although drainage is rarely used as a routine procedure, it might be useful in selected patients at high risk for biliary leakage. METHODS: We describe surgical management of long-segment exposed or injured bile ducts after extended parenchymal resection with concomitant lymphadenectomy. Because blood supply to the bile duct may be impaired, the risk of biliary necrosis and/or leakage is significant. Internal splinting of the bile duct to ensure optimum decompression plus guidance might be helpful. Thus, in selected cases after trisectionectomy we inserted an external-internal or internal-external drain into long-segment exposed bile ducts. For internal-external drains the tube was diverted via the major duodenal papilla into the duodenum and then transfixed after the duodenojejunal flexure through the jejunal wall by means of a Witzel's channel. RESULTS: Because the entire bile duct is splinted, this technique is superior to bile duct decompression with a T-tube. This is supported by the course of a patient suffering biliary leakage after extended right-sided hepatectomy for colorectal metastasis. Initially, a T-tube was inserted for decompression, but biliary leakage persisted. After inserting transhepatic external-internal drainage, bile leakage stopped immediately. The patient's course was then uneventful. Five other patients (mostly with locally advanced hepatocellular or cholangiocellular carcinoma) treated similarly were discharged without complications. Drain removal 6 weeks postoperatively was uncomplicated in five of the 6 patients. In the sixth patient, external-internal drainage was replaced by a Yamakawa-type prosthesis for a biliary stricture. None of the patients suffered severe complications during long-term follow-up. CONCLUSIONS: The bile duct drainage technique presented in this study was useful for preventing and treating bile leakage after long-segment exposure of extrahepatic bile ducts during major hepatectomy. Transhepatic or internal-external drains are often used for bilioenteric anastomoses, but similar drainage techniques have not been reported for the native bile duct. T-tubes are generally used in this situation. In particular cases, however, inner splinting of the bile duct and appropriate movement of the bile via a tube can be helpful.


Assuntos
Fístula Anastomótica/prevenção & controle , Drenagem/métodos , Hepatectomia/métodos , Hepatopatias/cirurgia , Complicações Pós-Operatórias/prevenção & controle , Adulto , Idoso , Descompressão Cirúrgica , Feminino , Humanos , Excisão de Linfonodo , Masculino , Pessoa de Meia-Idade
9.
Zentralbl Chir ; 136(4): 343-51, 2011 Aug.
Artigo em Alemão | MEDLINE | ID: mdl-21863512

RESUMO

Surgical resection is the only chance of cure for patients with colorectal liver metastases und significantly improves patient survival. The percentage of patients who can undergo curative resection as well as the survival after liver resection can be increased by using modern multimodal treatment algorithms. This has been achieved by not only innovations in pre- and postoperative chemotherapy but also by new surgical and interventional techniques and last but not least by individualisation of chemotherapeutic regimens. Due to the high number of new treatment modalities, a generally accepted treatment algorithm cannot be provided so far for all subgroups of the inhomogeneous group of patients with colorectal liver metastases. In the present review the current status of multimodal therapy is outlined and the pending questions mentioned.


Assuntos
Neoplasias Colorretais/terapia , Neoplasias Hepáticas/secundário , Algoritmos , Anticorpos Monoclonais/efeitos adversos , Anticorpos Monoclonais/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Ablação por Cateter , Quimioterapia Adjuvante/efeitos adversos , Ensaios Clínicos como Assunto , Neoplasias Colorretais/irrigação sanguínea , Neoplasias Colorretais/mortalidade , Neoplasias Colorretais/patologia , Terapia Combinada , Embolização Terapêutica/métodos , Hepatectomia , Humanos , Infusões Intra-Arteriais , Neoplasias Hepáticas/irrigação sanguínea , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/terapia , Terapia Neoadjuvante , Reoperação , Taxa de Sobrevida
10.
Zentralbl Chir ; 136(1): 79-81, 2011 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-21264811

RESUMO

Anastomotic leaks after oesophagojejunostomy usually are treated by endoluminal stenting with self-expandable metal or plastic stents. Here we present a patient with more than 4 years of oesophageal stenting for anastomotic leakage after gastrectomy. During the attempted removal of the stent he experienced a perforation of the jejunum. Emergency surgery with complete resection of the stent and transhiatal oesophagojejunostomy was performed. Generally, early removal of oesophageal stents 4-6 weeks after implantation is recommended, as later attempts often fail and may lead to extensive surgery.


Assuntos
Fístula Anastomótica/terapia , Perfuração Esofágica/etiologia , Estenose Esofágica/etiologia , Esôfago/cirurgia , Gastrectomia , Doença Iatrogênica , Complicações Pós-Operatórias/terapia , Stents/efeitos adversos , Neoplasias Gástricas/cirurgia , Idoso , Anastomose em-Y de Roux , Remoção de Dispositivo , Perfuração Esofágica/cirurgia , Estenose Esofágica/diagnóstico , Estenose Esofágica/cirurgia , Esofagoscopia , Humanos , Jejunostomia , Masculino , Reoperação
11.
Am J Transplant ; 10(10): 2313-23, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20840481

RESUMO

The efficacy and safety of dual-therapy regimens of twice-daily tacrolimus (BID; Prograf) and once-daily tacrolimus (QD; Advagraf) administered with steroids, without antibody induction, were compared in a multicenter, 1:1-randomized, two-arm, parallel-group study in 475 primary liver transplant recipients. A double-blind, double-dummy 24-week period was followed by an open extension to 12 months posttransplant. The primary endpoint, event rate of biopsy-proven acute rejection (BPAR) at 24 weeks, was 33.7% for tacrolimus BID versus 36.3% for tacrolimus QD (Per-protocol set; p = 0.512; treatment difference 2.6%, 95% confidence interval -7.3%, 12.4%), falling within the predefined 15% noninferiority margin. At 12 months, BPAR episodes requiring treatment were similar for tacrolimus BID and QD (28.1% and 24.7%). Twelve-month patient and graft survival was 90.8% and 85.6% for tacrolimus BID and 89.2% and 85.3% for tacrolimus QD. Adverse event (AE) profiles were similar for both tacrolimus BID and QD with comparable incidences of AEs and serious AEs. Tacrolimus QD was well tolerated with similar efficacy and safety profiles to tacrolimus BID.


Assuntos
Imunossupressores/administração & dosagem , Transplante de Fígado/métodos , Tacrolimo/administração & dosagem , Adulto , Feminino , Rejeição de Enxerto , Humanos , Testes de Função Renal , Transplante de Fígado/imunologia , Masculino , Pessoa de Meia-Idade , Tacrolimo/efeitos adversos , Tacrolimo/sangue , Resultado do Tratamento
12.
Chirurg ; 91(6): 466-473, 2020 Jun.
Artigo em Alemão | MEDLINE | ID: mdl-32424599

RESUMO

BACKGROUND: Indocyanine green (ICG) opens up numerous possibilities for applications in hepatobiliary surgery, due to its exclusive hepatic excretion and its fluorescence properties in the near infrared (NIR) spectrum. OBJECTIVE: Systematic review of the literature on the application of ICG imaging in open and laparoscopic liver surgery. MATERIAL AND METHODS: Literature review and summary of the recent scientific original articles and reviews. RESULTS: The ICG fluorescence imaging is increasingly being used in liver surgery. It allows real-time display of the segmental anatomy of the liver. Moreover, depending on the tumor entity, direct or indirect visualization of liver tumors and metastases is also possible. The detection of bile leaks might also be facilitated. Recent experiences in liver surgery have shown that ICG imaging enables a more sensitive intraoperative detection of additional foci and probably also a higher R0 resection rate; however, the application is mainly helpful for superficial lesions, since the depth of penetration of NIR is only 8-10 mm. CONCLUSION: Fluorescence staining using ICG is a valuable supplementary tool in modern liver surgery. It is particularly helpful in laparoscopic surgery where tactile control is eliminated and three-dimensional orientation is difficult. These disadvantages can be partially compensated by additional real-time imaging using ICG.


Assuntos
Laparoscopia , Neoplasias Hepáticas/cirurgia , Humanos , Verde de Indocianina , Coloração e Rotulagem
13.
Chirurg ; 91(1): 11-17, 2020 Jan.
Artigo em Alemão | MEDLINE | ID: mdl-31705282

RESUMO

BACKGROUND: Benign biliary diseases comprise entities, which present with very similar pathognomonic symptoms despite fundamental etiological differences. Obstructions of intrahepatic and extrahepatic bile ducts due to stones, tumors or parasites as well as stenoses and cystic alterations belong to the group of benign biliary diseases. OBJECTIVE: This article provides a systematic overview of the indications and differential treatment of benign biliary diseases with special emphasis on the surgical treatment. MATERIAL AND METHODS: The presented recommendations are in accordance with national and international guidelines, current scientific papers and expert opinions. RESULTS: Essentially the surgical options for benign biliary diseases consist of revision, reconstruction through bilioenteric anastomosis, resection and complete organ replacement in the sense of liver transplantation. The location of the affected segment of the biliary tree, the symptoms, the progress of the disease and suspected malignancy essentially determine the level of escalation in the described treatment level scheme. CONCLUSION: The treatment of benign biliary diseases is complex and requires achievement of unimpaired, unobstructed bile drainage. It serves the purpose of resolving cholestasis and thereby avoiding recurrent cholangitis and long-term complications, such as biliary cirrhosis and malignant transformation; however, in some cases of premalignant lesions of the bile ducts the strategy resembles cancer surgery, including resection of the affected tissue.


Assuntos
Procedimentos Cirúrgicos do Sistema Biliar , Colangite , Colestase , Ductos Biliares/cirurgia , Ductos Biliares Extra-Hepáticos/cirurgia , Colangite/cirurgia , Colestase/cirurgia , Drenagem , Humanos
14.
Chirurg ; 91(2): 150-159, 2020 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-31435721

RESUMO

HyperSpectral Imaging (HSI) technology enables quantitative tissue analyses beyond the limitations of the human eye. Thus, it serves as a new diagnostic tool for optical properties of diverse tissues. In contrast to other intraoperative imaging methods, HSI is contactless, noninvasive, and the administration of a contrast medium is not necessary. The duration of measurements takes only a few seconds and the surgical procedure is only marginally disturbed. Preliminary HSI applications in visceral surgery are promising with the potential of optimized outcomes. Current concepts, possibilities and new perspectives regarding HSI technology together with its limitations are discussed in this article.


Assuntos
Procedimentos Cirúrgicos do Sistema Digestório , Imagem Óptica , Humanos , Imagem Óptica/métodos , Análise Espectral
15.
Eur J Cancer ; 88: 77-86, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29195117

RESUMO

BACKGROUND: The FIRE-3 trial investigated combination chemotherapy plus either cetuximab or bevacizumab in patients with untreated metastatic colorectal cancer (mCRC) not scheduled for upfront surgery. We aimed to determine the number of patients who present with potentially resectable disease during systemic first-line therapy and to compare the findings with study reports concerning resections and outcome. PATIENTS AND METHODS: This evaluation of 448 patients was performed as central review blinded for treatment, other reviewers' evaluations and conducted interventions. Resectability was defined if at least 50% of the reviewers recommended surgical-based intervention. Overall survival was assessed by Kaplan-Meier method. RESULTS: Resectability increased from 22% (97/448) at baseline before treatment to 53% (238/448) at best response (P < 0.001), compared with an actual secondary resection rate for metastases of 16% (72/448). At baseline (23% versus 20%) and best response (53% versus 53%), potential resectability of metastases in this molecular unselected population was similar in cetuximab-treated patients versus bevacizumab-treated patients and not limited to patients with one-organ disease. The actual resection rate of metastases was significantly associated with treatment setting (P = 0.02; university hospital versus hospital/practice). Overall survival was 51.3 months (95% confidence interval [CI] 35.9-66.7) in patients with resectable disease who received surgery, 30.8 months (95% CI 26.6-34.9) in patients with resectable disease without surgery and 18.6 months (95% CI 15.8-21.3) in patients with unresectable disease (P < 0.001). CONCLUSIONS: Our findings illustrate the potential for conversion to resectability in mCRC, certain reluctance towards metastatic resections in clinical practice and the need for pre-planned and continuous evaluation for metastatic resection in high-volume centres. CLINICALTRIALS. GOV-IDENTIFIER: NCT00433927.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/cirurgia , Avaliação de Resultados em Cuidados de Saúde/métodos , Adulto , Idoso , Bevacizumab/administração & dosagem , Camptotecina/administração & dosagem , Camptotecina/análogos & derivados , Cetuximab/administração & dosagem , Neoplasias Colorretais/patologia , Terapia Combinada , Feminino , Fluoruracila/administração & dosagem , Humanos , Irinotecano , Estimativa de Kaplan-Meier , Leucovorina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Metástase Neoplásica , Avaliação de Resultados em Cuidados de Saúde/estatística & dados numéricos
16.
Nuklearmedizin ; 46(1): 15-21, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-17299650

RESUMO

AIM: In addition to planar parathyroid scintigraphy, SPECT and image fusion with CT/MR improve adenoma detection in primary hyperparathyroidism (pHPT). This study evaluated the use of a hybrid SPECT-CT device concerning image fusion and attenuation correction (AC). PATIENTS, METHODS: The data of 26 patients with pHPT, preoperatively examined by (99m)Tc-sestamibi dual-phase scintigraphy plus SPECT-CT (low-dose CT), was retrospectively evaluated by two observers in a consensus reading. The images of planar scintigraphy, non-attenuation corrected SPECT (SPECT(NAC)), attenuation corrected SPECT (SPECT(AC)) and SPECT(AC)-CT were interpreted and compared to the results of surgery. The effect of AC on focus intensity was semiquantified by determination of the tumor-to-background (TB) ratio for SPECT(AC) and SPECT(NAC). Finally, the TB(AC)/TB(NAC)-ratio was calculated for each focus and correlated to the distance of a focus from the body surface. RESULTS: 20/26 (77%) patients were positive in planar scintigraphy. One focus was detected by SPECT only. AC of SPECT-data increased image contrast but had no impact on the detection rate. Additional SPECT(AC)-CT image fusion facilitated the localization of three mediastinal foci. In the semiquantitative analysis an increase in TB after AC was observed, although there was no strong correlation between depth of the focus (16-60 mm) and the TB(AC)/TB(NAC)-ratio (r = 0.213, p = 0.353). CONCLUSION: The detection rate of planar scintigraphy is only slightly improved by SPECT imaging. Due to the low spatial resolution of the CT component, the benefit of image fusion is limited to mediastinal foci. However, as TB and image contrast is measurably improved after AC there is a potential to improve the sensitivity of parathyroid SPECT.


Assuntos
Adenoma/diagnóstico por imagem , Neoplasias das Paratireoides/diagnóstico por imagem , Tomografia Computadorizada de Emissão de Fóton Único , Tomografia Computadorizada por Raios X , Adenoma/cirurgia , Adulto , Idoso , Feminino , Humanos , Processamento de Imagem Assistida por Computador/métodos , Masculino , Pessoa de Meia-Idade , Tamanho do Órgão , Neoplasias das Paratireoides/cirurgia , Reprodutibilidade dos Testes , Estudos Retrospectivos , Glândula Tireoide/anatomia & histologia , Glândula Tireoide/diagnóstico por imagem , Resultado do Tratamento
18.
Chirurg ; 87(2): 114-8, 2016 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-26541451

RESUMO

Vascular reconstruction is obligatory in transplantation surgery. A differentiation is made between routine vascular reconstructions, which are required for all solid organ transplantations and special cases. Because of the shortage of organs it is often necessary to use organs with complex anatomical vascular prerequisites, which requires high vascular surgical expertise for individualized reconstruction. Non-routine reconstructions are often also necessary on the side of the recipient. This review article presents both the routine and exceptional types of reconstruction.


Assuntos
Transplante de Órgãos/métodos , Procedimentos Cirúrgicos Vasculares/métodos , Vísceras/irrigação sanguínea , Vísceras/cirurgia , Humanos , Comunicação Interdisciplinar , Colaboração Intersetorial , Rim/irrigação sanguínea , Transplante de Rim/métodos , Fígado/irrigação sanguínea , Transplante de Fígado/métodos , Pâncreas/irrigação sanguínea , Transplante de Pâncreas/métodos
19.
Updates Surg ; 68(4): 369-376, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27677470

RESUMO

Biliary leakage is a serious complication after liver resection and represents the major cause of post-operative morbidity. In spite of already identified risk factors, little is known about the role of intra-biliary pressure following liver surgery in the development of biliary leakage. Biliary decompression may have a positive impact and reduce the incidence of biliary leakage at the parenchymal resection site. 397 patients undergoing liver resection without bilioenteric anastomosis were included in the retrospective analysis of the risk factors for the development of biliary leakage focusing on the intra-operative reduction of the biliary pressure by T-tube and liver histology. Among 397 analyzed patients after parenchymal resection, biliary leakage occurred in 39 cases (9.8 %). The extent of parenchymal resection was not associated with the total occurrence of biliary leak (p = 0.626). Lower incidence of biliary leakage from the resection surface was significantly associated with the use of T-tube (4.9 vs. 13.2 %; p = 0.006). In the subgroup analysis, insertion of a T-tube was not associated with a reduction of biliary leakage after anatomical hemihepatectomies (p = 0.103) and extraanatomical liver resection (p = 0.676). However, a high statistical significance could be detected in patients with extended hemihepatectomies (58.3 vs. 3.8 %; p < 0.001). Once biliary leak occurred without T-tube, median hospitalization duration significantly increased compared to patients with biliary decompression and without biliary leak (p < 0.001). The results of our retrospective data analysis suggest a significant beneficial impact of the T-tube on the development of biliary leakage in patients undergoing extended liver surgery.


Assuntos
Fístula Anastomótica/cirurgia , Ductos Biliares/cirurgia , Doenças Biliares/cirurgia , Drenagem/métodos , Hepatectomia/efeitos adversos , Neoplasias Hepáticas/cirurgia , Fístula Anastomótica/epidemiologia , Fístula Anastomótica/etiologia , Doenças Biliares/epidemiologia , Doenças Biliares/etiologia , Feminino , Seguimentos , Alemanha/epidemiologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco
20.
Chirurg ; 86(2): 114-20, 2015 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-25633582

RESUMO

The management of bleeding in liver surgery is multidisciplinary. In most cases traumatic liver injury can be treated conservatively. Surgical treatment of severe liver trauma is associated with a high mortality rate due to extensive parenchymal and vascular injury as well as blood loss associated with the trauma. Fundamental knowledge of liver anatomy and refined surgical techniques help to reduce intraoperative blood loss and improve outcomes in elective liver surgery; nevertheless, severe blood loss and augmented transfusion requirements during extensive liver resection are still key factors for increased morbidity and mortality. Intraoperative lowering of central venous pressure and selective hepatic inflow occlusion or even total hepatic vascular exclusion are effective means of further reducing intraoperative blood loss. Furthermore, the application of sophisticated surgical instruments provides the surgeon with the potential to operate without the requirement of additional blood transfusions.


Assuntos
Perda Sanguínea Cirúrgica , Hepatectomia , Complicações Intraoperatórias/terapia , Hepatopatias/cirurgia , Hemorragia Pós-Operatória/terapia , Comportamento Cooperativo , Humanos , Comunicação Interdisciplinar
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