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1.
Int J Clin Pract ; 75(12): e14849, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34516704

RESUMO

BACKGROUND: Many European health institutions have appointed multidisciplinary teams for the general management of vascular access to help improve efficiency, patient safety and reduce costs. Vascular access teams (VATs), or infusion teams, are specifically trained groups of healthcare professionals who assess, place, manage and monitor various outcomes and aspects of vascular access care. OBJECTIVE: To assess the current landscape of vascular access management as a discipline across Europe. METHODS: A Faculty of European VAT leads and experts developed a survey of 20 questions which was disseminated across several European countries. Questions focused on respondent and institution profile, vascular access device selection and placement, monitoring and reporting of complications, and access to training and education. The 1449 respondents included physicians, nurses, anaesthetists, radiologists and surgeons from public and private institutions ranging in size. RESULTS: Availability of dedicated VATs vary by country, institution size, and institution type. Institutions with a VAT are more likely to utilise a tool (eg, algorithm or guideline) to determine the appropriate vascular access device (55% vs 38%, P < .0002) and to have feedback on systematic monitoring of complications (40% vs 28%, P = .015). Respondents from institutions with a VAT are more likely to have received training on vascular access management (79% vs 53%, P < .0001) and indicated that the VAT was a source of support when difficulties arise. CONCLUSION: The survey results highlight some of the potential benefits of implementing a dedicated VAT including the use of a broader range of vascular access devices, increased awareness of the presence of vascular access policies, increased the likelihood of recent vascular access training, and increased rates of systematic monitoring of associated complications. The study reveals potential areas for further focus in the field of vascular access care, specifically examining the direct impact of vascular access teams.


Assuntos
Pessoal de Saúde , Europa (Continente) , Humanos , Inquéritos e Questionários
2.
Hosp Pract (1995) ; 49(3): 141-150, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33781151

RESUMO

BACKGROUND: Vascular access by means of intravenous catheters is essential for the safe, effective and cost-efficient delivery of intravenous fluids, antibiotics, nutrition and chemotherapy, but the use of these devices is not without complications. PURPOSE: A faculty of multidisciplinary European vascular access team (VAT) Leads/Members and experts sought to reframe how the implementation of a VAT could have positive impacts on patients and hospitals. METHODS: Interview data from a Faculty of nine VAT Leads/Members and experts from six European countries on the impact of multidisciplinary VATs in modern healthcare were assessed. A literature search was conducted that included Medline®-cited peer-reviewed articles published in the past 10 years in order to identify impact data and post-implementation of a multidisciplinary VAT that support the benefits to patient safety and satisfaction and to hospital efficiencies reported in the interview program. RESULTS: While VATs vary in structure and function, clarity of purpose and supportive training and education are key. Barriers to the implementation of VATs show commonality across countries, such as lack of investment, insufficient training and lack of awareness. Proven markers of VAT success include rapid referrals, improved patient outcomes and improved organizational efficiency. Standardization of outcomes data capture, processing and reporting are key to monitoring performance against baseline. Awareness of the cost of complications arising from inappropriate choice and placement, and poor care and maintenance, of the vascular access device must be raised. CONCLUSIONS: The implementation of VATs can positively impact patient safety and satisfaction, improve organizational efficiencies and cost-effectiveness, and could create new opportunities for in- and outpatient services, beneficial to both patients and institutions.


Assuntos
Cateterismo Venoso Central/normas , Cateterismo Periférico/normas , Implementação de Plano de Saúde/organização & administração , Comunicação Interdisciplinar , Equipe de Assistência ao Paciente/organização & administração , Radiologia Intervencionista/normas , Infecções Relacionadas a Cateter/prevenção & controle , Humanos , Garantia da Qualidade dos Cuidados de Saúde
3.
JPEN J Parenter Enteral Nutr ; 45(4): 768-776, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-32511768

RESUMO

BACKGROUND: Whether peripherally inserted central catheters (PICCs) are appropriate as safe and durable venous access devices (VADs) is still controversial. The aim of this 7-year, prospective cohort study was to compare the incidence rate differences of catheter-related complications (CRCs) among 4 types of central VADs in cancer patients receiving home parenteral nutrition (HPN). METHODS: We enrolled all adult cancer outpatients who were candidates for HPN and who had a central VAD inserted during the study period, focusing on the incidence rate of CRCs. RESULTS: We evaluated 854 central VADs (401 PICCs, 137 nontunneled centrally inserted central catheters [CICCs], 118 tunneled-cuffed CICCs, and 198 ports) in 761 patients, for a total of 169,116 catheter-days. Overall, the rate of total CRCs was 1.08/1000 catheter-days. The incidence of catheter-related bloodstream infections was low (0.29/1000), particularly for PICCs (0.08/1000; P < .001 vs tunneled-cuffed CICCs) and for ports (0.21/1000; P < .019 vs tunneled-cuffed CICCs). The rates of mechanical complications (0.58/1000) and of catheter-related symptomatic thrombosis (0.09/1000) were low and similar for PICCs, tunneled-cuffed CICCs, and ports. In terms of duration and removal rate due to complications, PICCs were like tunneled-cuffed CICCs and ports. Altogether, PICCs had fewer total complications than tunneled-cuffed CICCs (P < .001), there was no difference in total complications between PICCs and ports. CONCLUSION: PICCs had significantly better outcomes than tunneled-cuffed CICCs and were safe and durable as ports. Our extensive, long-term study suggests that PICCs can be successfully used as safe and long-lasting VADs for HPN in cancer patients.


Assuntos
Infecções Relacionadas a Cateter , Cateterismo Venoso Central , Cateterismo Periférico , Cateteres Venosos Centrais , Neoplasias , Nutrição Parenteral no Domicílio , Adulto , Infecções Relacionadas a Cateter/epidemiologia , Infecções Relacionadas a Cateter/etiologia , Cateterismo Venoso Central/efeitos adversos , Cateteres Venosos Centrais/efeitos adversos , Humanos , Neoplasias/complicações , Neoplasias/terapia , Nutrição Parenteral no Domicílio/efeitos adversos , Estudos Prospectivos , Estudos Retrospectivos
4.
Res Nurs Health ; 42(3): 198-204, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-30912181

RESUMO

The type of central vascular access device providers chosen for providing parenteral supportive treatments has evolved over the past years, going from routinely used centrally inserted catheters to a more recent trend of peripherally-inserted central catheters (PICCs) when expected treatment duration is less than 6 months. This multicenter retrospective study aimed to provide a comprehensive assessment of the safety of PICCs in administering parenteral supportive treatments. All adult inpatients and outpatients who had a PICC inserted for the administration of parenteral supportive treatments (i.e., parenteral nutrition, intravenous fluids, blood products, or antibiotics) between September 2007 and December 2014 in four public Italian hospitals were included. The primary outcome was PICC removal because of an adverse event (AE, defined as occlusion, exit-site infection, or symptomatic thrombosis). Among the 1,250 included patients, 178 PICC-related removals because of AEs (14.2%; 1.62 AEs per 1,000 PICC days) were reported. Rates of PICC removal because of occlusion, exit-site infection, and symptomatic thrombosis were 1.08, 0.32, and 0.23 per 1,000 PICC days, respectively. The median dwell-time between PICC insertion and its removal because of an AE was 67 days (interquartile range 28-180 days). Risk of PICC removal due to AE was higher with open-system PICCs [hazard ratio = 2.75, 95% confidence interval 1.52-4.96]. In this study, we found preliminary evidence that PICCs can be safely used to administer parenteral supportive treatments lasting up to 6 months. PICCs may be a relevant alternative to centrally inserted catheters for medium-term parenteral supportive treatments.


Assuntos
Cateterismo Venoso Central/estatística & dados numéricos , Nutrição Parenteral Total/estatística & dados numéricos , Segurança do Paciente/estatística & dados numéricos , Adulto , Idoso , Infecções Relacionadas a Cateter/epidemiologia , Cateterismo Venoso Central/efeitos adversos , Cateterismo Periférico/estatística & dados numéricos , Estado Terminal/terapia , Feminino , Humanos , Itália , Masculino , Pessoa de Meia-Idade , Nutrição Parenteral Total/efeitos adversos , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Tromboembolia Venosa/etiologia
5.
Oncologist ; 24(9): e953-e959, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-30755503

RESUMO

BACKGROUND: Peripherally inserted central catheters (PICCs) are central venous catheters (CVCs) that are commonly used in onco-hematologic settings for chemotherapy administration. As there is insufficient evidence to recommend a specific CVC for chemotherapy administration, we aimed to ascertain PICC-related adverse events (AEs) and identify independent predictors of PICC removal in patients with cancer receiving chemotherapy. MATERIALS AND METHODS: Information on adult patients with cancer with a PICC inserted for chemotherapy administration between September 2007 and December 2014 was extracted from six hospital databases. The primary outcome was PICC removal due to PICC-related AEs (occlusion, infection, or symptomatic thrombosis). Independent predictors of PICC removal were identified using a multivariate Cox regression model. RESULTS: Among the 2,477 included patients, 419 PICC-related AEs (16.9%; 1.09 AEs per 1,000 PICC-days) were reported. AEs increased when PICC was inserted at the brachial site (hazard ratio [HR], 1.37; 95% confidence interval [CI], 1.02-1.84) and with open systems (HR, 1.89; 95% CI, 1.24-2.88) and decreased in older men (HR, 0.63; 95% CI, 0.49-0.81). CONCLUSION: Use of PICC for chemotherapy administration was associated with a low all-AEs rate. The basilic vein was the safer site, and valved systems had fewer AEs than open systems. More research is needed to explore the interaction between AEs, sex, and age. IMPLICATIONS FOR PRACTICE: These findings provide clinicians with evidence that peripherally inserted central catheters (PICCs) are safe for chemotherapy administration. They also suggest that clinicians should limit the use of open systems when long chemotherapy regimens are scheduled. Moreover, alternatives to PICCs should be considered when administering chemotherapy to young men.


Assuntos
Cateterismo Periférico/efeitos adversos , Cateteres Venosos Centrais/efeitos adversos , Neoplasias Hematológicas/tratamento farmacológico , Trombose/patologia , Idoso , Tratamento Farmacológico , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/tratamento farmacológico , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/patologia , Feminino , Neoplasias Hematológicas/complicações , Neoplasias Hematológicas/epidemiologia , Neoplasias Hematológicas/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Fatores de Risco , Trombose/epidemiologia , Trombose/etiologia
6.
Minerva Med ; 109(3): 153-202, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29849020

RESUMO

Vascular access is the commonest invasive procedure in secondary care. Vascular access is understood as being access to the bloodstream of acute and chronic patients for diagnostic and therapeutic purposes such as blood sampling, vessel pressure monitoring, fluid infusions (blood transfusions, parenteral nutrition), pharmacological treatments (e.g. antibiotic therapies, chemotherapy, analgesic therapies) or apheresis/dialysis through catheters that may remain in the vessels for weeks or months. There is a wide variety of options available for venous access. Device selection for venous access must be adapted to the patient's needs, and to the type, duration and frequency of the infusion. The scenario is rapidly evolving and hence treatments such as cancer chemotherapy, total parenteral nutrition, long-term parenteral antimicrobial therapies are increasing not only in hospitalized patients, but also in contexts other than traditional ones, such as local care, in response to needs related to healthcare expenditure or patients' needs. This paper originates from the idea of a multidisciplinary group of experts to analyze the main, most recent international guidelines and recommendations on vascular access and to evaluate its implementation in Italy. It often happens that documents acquired in different contexts, however extraordinarily effective and exhaustive, are difficult to apply in contexts where the healthcare organization, professional resources, communication dynamics and regulations are different. The consequence is a progressive departure from international standards and evidence-based medicine, which is particularly burdensome in sectors (such as vascular access and devices used for access) where technological innovation requires constant updating, alignment and method sharing. The work motivation of this group of authors, which sees its final finding in the welfare standards and criteria of appropriateness contained in this document, lies in the particular ongoing and future Italian epidemiological scenario and in the assessments of health economics that demand conscious and appropriate decisions in the interest of the citizen and the healthcare system. The vascular access field is undergoing a veritable revolution; once upon a time the leading lights were those who possessed the best technical skills, the best manual skills, whereas nowadays vascular access decisions are strategic decisions involving specially trained health professionals, able to assess complex interactions and work in teams. There is a strong cultural need, not only with regard to technical aspects, but also for the execution of procedures in daily clinical practice that comply with the recommendations set out in the guidelines published and elaborated by public and private bodies and institutions, as well as by scientific societies and recognized technical and scientific associations. This document is not a manual on vascular access for consultation by all those who intend to go deeper into operating aspects (selection of the device, implantation and management), but a reflection on the most recent pointers in the field of vascular access within Italy's complex healthcare situation.


Assuntos
Cateterismo Venoso Central/normas , Cateterismo Periférico/normas , Fidelidade a Diretrizes , Cateterismo Venoso Central/métodos , Cateterismo Periférico/métodos , Humanos , Internacionalidade , Itália , Guias de Prática Clínica como Assunto
7.
Infect Control Hosp Epidemiol ; 39(7): 875-877, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-29655373

RESUMO

Midline catheters (MCs) may be useful to avoid repeated venipuncture in patients requiring prolonged intravenous infusions with limited adverse events (AEs). We analyzed 2 Italian hospital databases to ascertain the safety of MCs. Among 1,538 adult patients, 154 MC-related AEs (10%; 2.49 AEs per 1,000 MC days) were reported.Infect Control Hosp Epidemiol 2018;875-877.


Assuntos
Infecções Relacionadas a Cateter/epidemiologia , Cateterismo Periférico/efeitos adversos , Cateteres de Demora/efeitos adversos , Administração Intravenosa , Idoso , Idoso de 80 Anos ou mais , Bases de Dados Factuais , Feminino , Hospitais , Humanos , Itália/epidemiologia , Masculino , Pessoa de Meia-Idade , Fatores de Risco
8.
Clin Sarcoma Res ; 8: 3, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29507712

RESUMO

BACKGROUND: Retroperitoneal sarcomas (RPS) should be surgically managed in specialized sarcoma centers. However, it is not clearly demonstrated if clinical outcome is more influenced by Center Case Volume (CCV) or by Surgeon Case Volume (SCV). The aim of this study is to retrospectively explore the relationship between CCV and SCV and the quality of surgery in a wide region of Northern Italy. METHODS: We retrospectively collected data about patients M0 surgically treated for RPSs in 22 different hospitals from 2006 to 2011, dividing them in two hospital groups according to sarcoma clinical activity volume (HCV, high case volume or LCV, low case volume hospitals). The HCV group (> 100 sarcomas observed per year) included a Comprehensive Cancer Center (HVCCC) with a high sarcoma SCV (> 20 cases/year), and a Tertiary Academic Hospital (HVTCA) with multiple surgeon teams and a low sarcoma SCV (≤ 5 cases/year for each involved surgeon). All other hospitals were included in the LCV group (< 100 sarcomas observed per year). RESULTS: Data regarding 138 patients were collected. Patients coming from LCV hospitals (66) were excluded from the analysis as prognostic data were frequently not available. Among the 72 remaining cases of HCV hospitals 60% of cases had R0/R1 margins, with a more favorable distribution of R0/R1 versus R2 in HVCCC compared to HVTCA. CONCLUSIONS: In HCV hospitals, sarcoma SCV may significantly influence RPS treatment quality. In low-volume centers surgical reports can often miss important prognostic issues and surgical quality is generally poor.

9.
Support Care Cancer ; 23(2): 403-9, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25120012

RESUMO

PURPOSE: Few prospective follow-up studies evaluating the use of peripherally inserted central catheters (PICCs) to deliver chemotherapy and/or home parenteral nutrition (HPN) have focused exclusively on oncology outpatients. The aim of this prospective study was to assess the reliability and the safety of PICCs over a 5-year use in non-hospitalized cancer patients requiring long-term intravenous therapies. METHODS: Since June 2008, all adult oncology outpatient candidates for PICC insertion were consecutively enrolled and the incidence of catheter-related complications was investigated. The follow-up continued until the PICC removal. RESULTS: Two hundred sixty-nine PICCs in 250 patients (98 % with solid malignancies) were studied, for a total of 55,293 catheter days (median dwell time 184 days, range 15-1,384). All patients received HPN and 71 % received chemotherapy during the study period. The incidence of catheter-related bloodstream infections (CRBSIs) was low (0.05 per 1,000 catheter days), PICC-related symptomatic thrombosis was rare (1.1 %; 0.05 per 1,000 catheter days), and mechanical complications were uncommon (13.1 %; 0.63 per 1,000 catheter days). The overall complication rate was 17.5 % (0.85 per 1,000 catheter days) and PICCs were removed because of complications only in 7 % of cases. The main findings of this study were that, if accurately managed, PICCs can be safely used in cancer patients receiving chemotherapy and/or HPN, recording a low incidence of CRBSI, thrombosis, and mechanical complications; a long catheter life span; and a low probability of catheter removal because of complications. CONCLUSIONS: Our study suggests that PICCs can be successfully utilized as safe and long-lasting venous access devices in non-hospitalized cancer patients.


Assuntos
Infecções Relacionadas a Cateter , Cateterismo Periférico , Cateteres Venosos Centrais/efeitos adversos , Neoplasias , Nutrição Parenteral no Domicílio , Trombose , Adulto , Idoso , Idoso de 80 Anos ou mais , Infecções Relacionadas a Cateter/epidemiologia , Infecções Relacionadas a Cateter/etiologia , Cateterismo Periférico/efeitos adversos , Cateterismo Periférico/métodos , Cateterismo Periférico/estatística & dados numéricos , Tratamento Farmacológico/métodos , Feminino , Seguimentos , Serviços Hospitalares de Assistência Domiciliar/estatística & dados numéricos , Humanos , Incidência , Itália , Masculino , Pessoa de Meia-Idade , Neoplasias/tratamento farmacológico , Nutrição Parenteral no Domicílio/métodos , Nutrição Parenteral no Domicílio/estatística & dados numéricos , Estudos Prospectivos , Reprodutibilidade dos Testes , Trombose/epidemiologia , Trombose/etiologia
10.
Interact Cardiovasc Thorac Surg ; 18(4): 415-7, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24431003

RESUMO

OBJECTIVES: Driveline infections are one of the most common and important complications in patients with left ventricular assist device (LVAD). One of the causes favouring the development of this complication is the traumatism of the exit site, which occurs in response to movement of the driveline. In this work, we present a simple and feasible method to immobilize the driveline at the level of the exit site. METHODS: From April 2013 until November 2013, 6 patients underwent implantation of HeartWare LVAD (HVAD) for an end-stage heart failure. When the patient has begun to mobilize after the implantation of the device, we have combined the use of two components with the aim of securing the driveline to the patient's skin: a StatLock system and a silicone suture. RESULTS: No case of local traumatism and no case of local infection at the driveline were observed during the follow-up. No patient reported pain or swelling at the driveline exit site. All patients were satisfied with their quality-of-life and they do not report any limitations in their daily activities. CONCLUSIONS: One of the major long-term complications in patients with LVAD is the development of infections of the exit site of the driveline. The trauma of this skin region promotes the onset and maintenance of an inflammatory process and local infectious. Avoiding excessive mobilization of the driveline is likely to reduce the incidence of infections of the exit site and improve the quality-of-life.


Assuntos
Insuficiência Cardíaca/terapia , Coração Auxiliar/efeitos adversos , Infecções Relacionadas à Prótese/prevenção & controle , Técnicas de Sutura , Função Ventricular Esquerda , Adulto , Idoso , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Desenho de Prótese , Infecções Relacionadas à Prótese/diagnóstico , Infecções Relacionadas à Prótese/microbiologia , Sistema de Registros , Resultado do Tratamento
11.
Minim Invasive Ther Allied Technol ; 23(1): 17-20, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23590395

RESUMO

BACKGROUND: Local excision of invasive cancer by transanal endoscopic microsurgery (TEM) entails the risk of lymphnode metastases that obliges to radical surgery. A determination of metastatic lymph-nodes would avoid major surgery in the vast majority of cases. We applied the concept of sentinel lymphnode (SLN) biopsy to suspected invasive rectal cancers treated by TEM. METHODS: Indocyanine green (ICG) is injected in the submucosa underneath the lesion. The tumor is dissected full-thickness until the perirectal fat. A near infra-red (NIR) optic provides a map of mesorectal lymphatics, on which guide the perirectal fat is dissected and lymph-nodes are excised. RESULTS: The technique was tested in three patients. In all cases the pathologist confirmed presence of lymphnodes in the excised tissue, no case showed metastasis. In all cases final pathology of the rectal neoplasm did not indicate radical surgery. CONCLUSION: In suspected invasive cancers, SLN mapping could be a useful technique to identify the first lymph node receiving drainage from the tumour, whose accurate pathological examination could predict the status of the remaining nodes and indicate further radical surgery. An ongoing study on a prospective case series will assess sensitivity and negative predictive value of SLN biopsy.


Assuntos
Microcirurgia/métodos , Cirurgia Endoscópica por Orifício Natural/métodos , Neoplasias Retais/cirurgia , Biópsia de Linfonodo Sentinela/métodos , Humanos , Verde de Indocianina , Metástase Linfática/diagnóstico , Invasividade Neoplásica , Estadiamento de Neoplasias , Valor Preditivo dos Testes , Neoplasias Retais/patologia , Reto/cirurgia
12.
Ann Ital Chir ; 80(3): 199-204, 2009.
Artigo em Italiano | MEDLINE | ID: mdl-20131537

RESUMO

INTRODUCTION: It has been estimated that 58% of people over 40 years of age have haemorrhoidal disease to some extent. Indications for operative treatment include third and fourth degree prolapsing haemorrhoids. Haemorrhoidectomy is frequently associated with significant postoperative pain and new techniques to reduce this pain are constantly under evaluation. The present study was conducted to determine the usefulness of the Ligasure system and compare it with conventional diathermy for haemorrhoidectomy. METHODS: 25 patients with grade 3 or 4 haemorrhoids requiring surgery were recruited and submitted to Ligasure Haemorrhoidectomy. They were compared with 25 patients operated with Milligan Morgan technique with diathermy. All patients were operated by the same two surgeons, who collaborate each other. RESULTS: There were no statistical differences in age, gender or clinical symptoms between the two groups. The mean operating time was 21.1 minutes (range, 15-32 min) in the Study Group and 19.8 min (range, 15-28 min) in the Control Group. Patients were dismissed the same day or the following day after surgery, without statistical differences. Early complications were similar, mainly represented by urinary retention, while late complications were comparable (1 bleeding in each group and 2 late healing in the Control Group). A partial reduction in postoperative pain and a faster healing of postoperative scars were observed in the Study Group. CONCLUSIONS: Ligasure Haemorrhoidectomy is a safe procedure in the treatment of 3rd and 4th grade haemorrhoids. In our study we observed a reduction of postoperative oedema and a faster healing of surgical scars, without affecting postoperative complications.


Assuntos
Eletrocirurgia , Hemorroidas/cirurgia , Adulto , Idoso , Procedimentos Cirúrgicos do Sistema Digestório/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
13.
Virchows Arch ; 454(2): 223-7, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19002493

RESUMO

Microcystic urothelial cell carcinoma is a rare variant of urothelial cell carcinoma which occurs in the bladder and, rarely, in the renal pelvis. Neuroendocrine differentiation is uncommon in pure urothelial carcinoma and is more frequently found in neoplasms with glandular differentiation. We report a case of microcystic urothelial cell carcinoma arising in renal pelvis and showing focal neuroendocrine differentiation. A 55-year-old man with a history of non-small cell cancer of the lung presented with abdominal pain and hematuria. Imaging studies and gross examination revealed a partially cystic mass in the left kidney. Microscopic examination disclosed invasive carcinoma with prominent microcystic features, with microcysts lined by low columnar and flat cells. Immunohistochemical analysis confirmed the urothelial histotype (positive for thrombomodulin, p63 and high-molecular-weight cytokeratins) and disclosed focal neuroendocrine differentiation.


Assuntos
Carcinoma Neuroendócrino/patologia , Neoplasias Renais/patologia , Pelve Renal/patologia , Diferenciação Celular , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Neoplasias da Bexiga Urinária/patologia
14.
Lung Cancer ; 64(2): 244-6, 2009 May.
Artigo em Inglês | MEDLINE | ID: mdl-19041155

RESUMO

We examined the in vitro effects of imatinib (Novartis Pharma AG, Basel, Switzerland) as a possible inhibitor of PDGFR pathway on cells derived from a recurrence of a pleural malignant solitary fibrous tumor (SFT). Primary cell culture was characterised by immunofluorescence. SFT-derived cells were treated with imatinib at different time points. Western blotting for PDGFR-beta, phospho-PDGFR-beta or smooth muscle actin (SMA) was performed before and after 96 h of treatment with imatinib. SFT-derived cells treated with imatinib for 96 h showed a dose dependent decrease of Ki67 expression. Results were confirmed by growth curve. Western blotting showed that PDGFR-beta was highly expressed and phosphorylated in SFT-derived cells and imatinib treatment reduced PDGFR-beta phosphorylation and SMA expression. With the limit of experimental findings, our results support a possible future application of imatinib as a candidate molecule in the target therapy of malignant SFTs over-expressing wild-type PDGFR.


Assuntos
Antineoplásicos/farmacologia , Proliferação de Células/efeitos dos fármacos , Piperazinas/farmacologia , Pirimidinas/farmacologia , Receptor beta de Fator de Crescimento Derivado de Plaquetas/efeitos dos fármacos , Tumor Fibroso Solitário Pleural/metabolismo , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Benzamidas , Western Blotting , Células Cultivadas , Cisplatino/administração & dosagem , Feminino , Imunofluorescência , Fluoruracila/administração & dosagem , Humanos , Mesilato de Imatinib , Técnicas In Vitro , Recidiva Local de Neoplasia/metabolismo , Recidiva Local de Neoplasia/patologia , Pneumonectomia , Radioterapia , Receptor alfa de Fator de Crescimento Derivado de Plaquetas/biossíntese , Receptor beta de Fator de Crescimento Derivado de Plaquetas/biossíntese , Tumor Fibroso Solitário Pleural/patologia , Tumor Fibroso Solitário Pleural/terapia
15.
J Surg Oncol ; 96(6): 464-9, 2007 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-17929257

RESUMO

BACKGROUND AND OBJECTIVES: Evaluation of the feasibility of the sentinel node technique in early colorectal neoplasms and its overall accuracy in predicting nodal metastases. METHODS: Thirty-five patients with colon or rectal lesions or degenerate polyps not radically excised by endoscopy were included. Lymphatic mapping was performed with 99mTc labeled albumin colloid injected submucosally by an endoscopic route the afternoon before the surgical procedure. The day of the intervention, 2.5% patent blue V dye (S.A.L.F: Italy) was injected circumferentially around the tumor. A hand held gamma detecting probe (Scintiprobe m100, Pol-Hi-Tech, Italy) was employed to detect "hot" nodes, in vivo and ex vivo. All sentinel nodes were embedded separately for haematoxylin and eosin staining. No IHC or PCR techniques were employed. RESULTS: Sentinel lymph nodes (SLN) were successfully identified in 35 out of 35 patients. Concordance between SLN and nodal status was observed in 32 out of 35 cases (91.4%); four patients (11.4%) were upstaged. Three skip nodal metastases were observed (false-negative rate: 8.5%). CONCLUSIONS: The sentinel node technique with blue dye and radiotracer seems valuable in early colorectal cancers detected by screening programs: a good organization and a learning curve are needed, as further multicentric studies.


Assuntos
Neoplasias Colorretais/patologia , Linfonodos/diagnóstico por imagem , Metástase Linfática/diagnóstico por imagem , Corantes de Rosanilina , Estudos de Viabilidade , Humanos , Cintilografia , Agregado de Albumina Marcado com Tecnécio Tc 99m
16.
J Surg Oncol ; 85(3): 166-70, 2004 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-14991889

RESUMO

BACKGROUND AND OBJECTIVES: Over the last decade, lymphatic mapping and sentinel lymph node (sN) biopsy have greatly increased the possibility of identifying nodal metastasis in clinically node-negative patients with melanoma and breast cancer, thus improving the accuracy of pathologic staging. Recently, sN biopsy has been applied also in colorectal cancer. This prospective study aimed to assess its feasibility and accuracy in predicting regional lymph nodes metastases in colorectal cancer patients as well as the impact on treatment decision-making. MATERIALS AND METHODS: Lymphatic mapping was accomplished by means of blue dye, which was intraoperatively injected into the subserosa overlying the tumor site in 26 patients undergoing colorectal cancer surgery. Following bowel resection, the operative specimen was inspected to identify each blue-stained node, the sN, which was sent separately to the pathologist. One half of each sN was examined by multiple 200 microm sections, while the second half was examined by standard bi-valving technique with hematoxylin-eosin (H and E) staining; all the other regional non-sentinel nodes were routinely examined by standard bi-valving technique and H and E staining. RESULTS: At least one sN was detected in 24 of 26 patients (92.3%); two patients with rectal cancer had no sN identified. Overall, 70 sN were retrieved into the operative specimens, with a mean of 2.9 sNs/patient, and 19 sNs were tumor-positive. An agreement between sN and regional lymph-node status was observed in 20 of 24 patients (83.4%). The sN was histologically negative in two of nine patients with positive regional nodes (sensitivity = 77.8%; false-negative rate of 22.2%); in two of seven patients with tumor-positive sN (28.6%), the sN was the exclusive site of regional nodal metastasis. The negative predictive value was 88.2% (15 of 17 patients), and the overall accuracy was 91.7% (22 of 24 patients). As regards the contribution to the detection of nodal metastasis according to the pathologic technique, standard H and E bi-valving technique detected 16 of 19 tumor-positive sNs (84.2%) while, by means of serial sectioning, metastases were detected in the remaining 3 of 19 sNs (15.8%). CONCLUSIONS: The sN biopsy proved feasible, with a rather short learning curve. The focused analysis of the sN by means of serial sectioning improved the detection rate of nodal metastasis compared to standard bi-valving examination, so that a more accurate nodal staging should be expected; finally, an elective localization of metastasis within the sN was observed in almost one third of regional node-positive patients.


Assuntos
Linfonodos/patologia , Neoplasias Retais/patologia , Biópsia de Linfonodo Sentinela , Neoplasias do Colo Sigmoide/patologia , Idoso , Corantes , Estudos de Viabilidade , Feminino , Hematoxilina , Humanos , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Valor Preditivo dos Testes , Estudos Prospectivos , Neoplasias Retais/cirurgia , Neoplasias do Colo Sigmoide/cirurgia
17.
Tumori ; 88(1): 37-40, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-12004848

RESUMO

AIMS AND BACKGROUND: Sentinel lymph node (SLN) biopsy is currently used and investigated in melanoma and in breast cancer. Its utility in gastrointestinal malignancies is still under debate. The prognosis of colorectal cancer patients is strongly related to the lymphatic involvement. The aim of this study was to evaluate the feasibility of SLN mapping in colorectal cancer and to assess its impact on pathological staging and treatment. METHODS AND STUDY DESIGN: We injected blue dye in 11 colorectal cancer patients during surgery. After resection the tumor specimen was examined to identify blue-stained lymph nodes and these lymph nodes were sent separately to the pathologist. Routine hematoxylin-eosin examination was performed on all nodes (including blue ones). No other techniques (eg immunohistochemistry or PCR) were performed. RESULTS: Sentinel lymph nodes were successfully identified in 10 of the 11 patients. We observed only one false negative result (10%) and the agreement between SLN and other lymph node status was 80% (8/10). One patient was upstaged: SLN was positive for metastases while the other lymph nodes were negative. CONCLUSIONS: Lymphatic mapping using patent blue dye is feasible in colorectal cancer. The identification of lymph nodal metastases by this technique led to upstaging of one patient, who may benefit from adjuvant therapy. These initial results prompt further investigation of this procedure as an accurate, minimally invasive staging approach in early colorectal cancer. We proceed with our study to evaluate the role of SLN mapping in colorectal cancer management.


Assuntos
Neoplasias Colorretais/patologia , Corantes , Linfonodos/patologia , Corantes de Rosanilina , Idoso , Estudos de Viabilidade , Feminino , Humanos , Metástase Linfática , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias/métodos , Prognóstico , Biópsia de Linfonodo Sentinela/métodos
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