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1.
Ann Surg Oncol ; 14(10): 3019-26, 2007 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17638057

RESUMO

BACKGROUND: Recently, pleural mesothelioma has been treated by cytoreductive surgery and intraoperative hyperthermic intrathoracic chemotherapy with doxorubicin and cisplatin. The well-established cardiotoxicity of doxorubicin and distressing data from an animal study raised concern about its impact on cardiac function. In the present study, early cardiotoxicity of this treatment modality was prospectively analyzed. PATIENTS AND METHODS: In 13 pleural mesothelioma patients, cardiotoxicity was monitored by clinical examination, electrocardiography, Troponin levels, cardiac ultrasonography, and estimation of left ventricular ejection fraction (LVEF) by radionuclide ventriculography before and during the first 6 months after cytoreductive surgery and intraoperative hyperthermic intrathoracic chemotherapy with doxorubicin (25-54 mg/m(2)) and cisplatin (65-120 mg/m(2)). RESULTS: No clinical cardiac failure or treatment-related death was observed. In two patients transient atrial fibrillation was noted; one associated with pulmonary emboli. Early posttreatment Troponin release was not of predictive value. Ultrasonography did not reveal significant alterations. LVEF decreased significantly (mean 0.07 or 11%, P = .001) during the first 3 months and remained stable thereafter. In univariate analysis, the degree of LVEF reduction was statistically related to maximal intrathoracic doxorubicin concentration (P = .031) and total cisplatin dose (P = .029). Direct exposure of the heart to the drugs as a result of partial pericardectomy was not associated with greater LVEF decrease. On the contrary, partial pericardectomy seemed to be associated with a smaller LVEF decline than when the pericardium remained intact (P = .045). In this small series, no statistically significant correlation between other treatment or pharmacokinetic parameters and LVEF decline was found. Notably, higher doxorubicin plasma concentrations and exposure were not associated with increased LVEF reduction. CONCLUSIONS: Early cardiotoxicity is limited after this treatment modality using substantial doses of doxorubicin and cisplatin. Hence, this study suggests that intrathoracic chemotherapy with doxorubicin and/or cisplatin may be used for primary and secondary pleural malignancies, even immediately after extensive thoracic surgery, without concern of severe early cardiotoxicity.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/toxicidade , Cardiomiopatias/induzido quimicamente , Quimioterapia do Câncer por Perfusão Regional , Hipertermia Induzida , Mesotelioma/tratamento farmacológico , Neoplasias Pleurais/tratamento farmacológico , Toracotomia , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/farmacocinética , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Fibrilação Atrial/sangue , Fibrilação Atrial/induzido quimicamente , Cardiomiopatias/sangue , Cisplatino/administração & dosagem , Cisplatino/farmacocinética , Cisplatino/toxicidade , Terapia Combinada , Relação Dose-Resposta a Droga , Doxorrubicina/administração & dosagem , Doxorrubicina/farmacocinética , Doxorrubicina/toxicidade , Ecocardiografia/efeitos dos fármacos , Eletrocardiografia/efeitos dos fármacos , Feminino , Humanos , Masculino , Mesotelioma/sangue , Mesotelioma/cirurgia , Pessoa de Meia-Idade , Invasividade Neoplásica , Pericardiectomia , Neoplasias Pleurais/sangue , Neoplasias Pleurais/cirurgia , Volume Sistólico/efeitos dos fármacos , Troponina T/sangue , Disfunção Ventricular Esquerda/sangue , Disfunção Ventricular Esquerda/induzido quimicamente
3.
Ann Surg ; 245(1): 104-9, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17197972

RESUMO

OBJECTIVE: To evaluate the survival of patients with pseudomyxoma peritonei (PMP) treated by cytoreductive surgery and intraoperative hyperthermic intraperitoneal chemotherapy (HIPEC), and to identify factors with prognostic value. SUMMARY BACKGROUND DATA: PMP is a clinical syndrome characterized by progressive intraperitoneal accumulation of mucous and mucinous implants, usually derived from a ruptured mucinous neoplasm of the appendix. Survival is dominated by pathology. METHODS: A total of 103 patients (34 men and 69 women) treated at The Netherlands Cancer Institute between 1996 and 2004 were identified. Survival was calculated from date of initial treatment and corrected for a second procedure. PMP was pathologically categorized into disseminated peritoneal adenomucinosis (DPAM), peritoneal mucinous carcinomatosis (PMCA), and an intermediate subtype (PMCA-I). Clinical and pathologic factors were analyzed to identify their prognostic value for survival. RESULTS: Median follow-up was 51.5 months (range, 0.1-99.5 months). Recurrence developed in 44%. A second procedure for recurrence was performed in 11 patients. The median disease-free interval was 25.6 months (95% confidence interval [CI], 14.8-43.6 months). The 3-year and 5-year disease-free survival probability was 43.6% (95% CI, 34.4%-55.2%) and 37.4% (95% CI, 28.2%-49.5%), respectively. The disease-specific 3-year and 5-year survival probability was 70.9% (95% CI, 62.0%-81.2%) and 59.5% (95% CI 48.7%-72.5%), respectively. Factors associated with survival were pathological subtype, completeness of cytoreduction, and degree and location of tumor load (P < 0.05). The main prognostic factor, independently associated with survival, was the pathologic subtype (P < 0.01). CONCLUSION: Cytoreductive surgery in combination with intraoperative HIPEC is a feasible treatment strategy for PMP in terms of survival. The pathologic subtype remains the dominant factor in survival. Patients should be centralized to improve survival by a combination of surgical experience and adequate patient selection.


Assuntos
Antineoplásicos/administração & dosagem , Hipertermia Induzida , Neoplasias Peritoneais/tratamento farmacológico , Neoplasias Peritoneais/cirurgia , Pseudomixoma Peritoneal/tratamento farmacológico , Pseudomixoma Peritoneal/cirurgia , Adulto , Idoso , Terapia Combinada , Feminino , Seguimentos , Humanos , Infusões Parenterais , Masculino , Pessoa de Meia-Idade , Neoplasias Peritoneais/mortalidade , Pseudomixoma Peritoneal/mortalidade , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento
4.
Ann Surg Oncol ; 14(2): 493-9, 2007 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17103067

RESUMO

BACKGROUND: Cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) is a treatment strategy for pseudomyxoma peritonei (PMP) with curative intent. The aim of this study was to determine the patterns of failure in patients who underwent such a procedure and to evaluate management and outcome of progressive disease. METHODS: After exclusion of patients with overt malignancy, progression was studied in 96 PMP patients treated primarily by CRS with HIPEC. Location, pathology, management and outcome were recorded. RESULTS: Median follow-up was 51.5 months (0.1-99.5). Median progression free survival (PFS) was 28.2 months (95% CI 18.3->). Progressive disease was mainly located sub hepatic (38%) or in multiple regions (36%). Pathological dedifferentiation was observed in 8 patients (20%). The choice of treatment depended on pathology, extent of disease and PFS. Seventeen patients were treated for progression by second CRS with (n=8) or without HIPEC (n=10). The 3-years overall survival (OS) probability after this treatment was 100% and 53.3% (95% CI 28.2-100%), respectively. Fifteen patients with (slow) progression were observed. Three-years OS probability of these patients was 66.0% (95% CI 43.4-100%). All patients treated for progression by systemic chemotherapy only (n=6) had died of disease after a median follow up of 14.8 (9.8-33.6) months. A longer PFS after primary treatment was associated with longer OS after progression (P = 0.04). CONCLUSIONS: Progressive PMP after primary CRS with HIPEC is probably the result of technical failure and/or tumor biology. Management of progressive PMP can be valuable for selected patients and should depend primarily on the PFS.


Assuntos
Antineoplásicos/administração & dosagem , Neoplasias Peritoneais/terapia , Peritônio/cirurgia , Pseudomixoma Peritoneal/terapia , Adulto , Idoso , Terapia Combinada , Progressão da Doença , Feminino , Humanos , Infusões Parenterais , Masculino , Pessoa de Meia-Idade , Neoplasias Peritoneais/patologia , Pseudomixoma Peritoneal/patologia , Estudos Retrospectivos , Análise de Sobrevida , Falha de Tratamento
5.
Ann Surg Oncol ; 14(1): 100-8, 2007 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-17066231

RESUMO

BACKGROUND: Radiotherapy (RT) has become the primary treatment of choice for anal cancer in an effort to avoid colostomy. The current role of surgery appears generally to be underestimated, since diverting colostomy or abdominoperineal resection still often seems to be necessary for complications and local treatment failure after RT. METHODS: The data of 83 patients primarily treated by RT with curative intent throughout a 20-year period in our institute were analyzed regarding the need for colostomy. RESULTS: Totally, 28 patients (34%) required creation of a colostomy after primary RT for local failure or treatment-related complications during a mean follow-up period of 39 months. The 3-year actuarial colostomy-free rate was 59% (mean 85 +/- 9 months). Early stage disease, low T-score and absence of infiltration in adjacent organs were associated with a reduced need for colostomy in univariate analysis. In multivariate analysis only T-score was an independent variable in predicting prolonged colostomy-free interval. In this study, no statistically significant differences were noted for gender, age, nodal status, total radiation dose, radiation boost and concurrent chemotherapy. CONCLUSIONS: In approximately one-third of the patients treated by anal sphincter saving management with curative aimed primary RT, the creation of a colostomy appeared to be necessary for RT complications and local treatment failure. Therefore, patients should be well informed regarding the considerable risk of need for colostomy after RT for anal cancer.


Assuntos
Neoplasias do Ânus/radioterapia , Carcinoma de Células Escamosas/radioterapia , Colostomia , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias do Ânus/cirurgia , Carcinoma de Células Escamosas/cirurgia , Intervalo Livre de Doença , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica , Recidiva Local de Neoplasia/cirurgia , Neoplasia Residual , Lesões por Radiação/etiologia , Lesões por Radiação/cirurgia , Dosagem Radioterapêutica , Fatores de Risco , Falha de Tratamento
6.
Ann Surg Oncol ; 12(10): 808-16, 2005 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-16132377

RESUMO

BACKGROUND: The prognosis for patients with liver metastases from colorectal carcinoma is limited because of the low number of patients who are eligible for curative hepatic resection. In this phase I study, 31 liver metastases in 24 patients with nonresectable metastases from colorectal carcinoma were treated with photodynamic therapy (PDT). METHODS: The photosensitizer 5,10,15,20-tetrakis(m-hydroxyphenyl)bacteriochlorin (mTHPBC) was intravenously administered in a dose of .6 mg/kg (n = 12) or .3 mg/kg (n = 12). After 120 hours (n = 18) or 48 hours (n = 6), tumors were illuminated for 300 to 600 seconds through percutaneously inserted optical fibers with a light dose of 60 J/cm of diffuser (740 nm). RESULTS: Tumor necrosis at 1 month after PDT was achieved in all treated lesions. Laser treatment was associated with mild pain (n = 8) and transient subclinical hepatotoxicity (n = 21). In one patient, PDT damage to the pancreas was inflicted, and in another patient, PDT damage of the skin occurred, but no serious clinical complications from PDT were reported. Administration of .6 mg/kg of mTHPBC led to transient phlebitis in 10 patients, and 3 patients experienced mild skin phototoxicity after excess light exposure. CONCLUSIONS: Colorectal liver metastases that are ineligible for resection can be safely and effectively treated with interstitial mTHPBC-based PDT.


Assuntos
Neoplasias Colorretais/secundário , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/secundário , Fotoquimioterapia/métodos , Porfirinas/uso terapêutico , Adulto , Idoso , Feminino , Humanos , Infusões Intravenosas , Terapia a Laser , Masculino , Pessoa de Meia-Idade , Fotoquimioterapia/efeitos adversos , Pele/patologia
7.
Ann Surg Oncol ; 12(1): 65-71, 2005 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-15827780

RESUMO

BACKGROUND: Peritoneal carcinomatosis of colorectal cancer is probably best treated by cytoreduction and hyperthermic intraperitoneal chemotherapy (HIPEC). In The Netherlands Cancer Institute, this treatment has been performed since 1995. The long tradition of this treatment enabled us to study long-term survival in detail. METHODS: Between 1995 and 2003, 117 patients were treated by cytoreduction and HIPEC. The aim of the cytoreduction was to remove all visible tumor. After the cytoreduction, the abdomen was perfused with mitomycin C (35 mg/m2) at 40 degrees C to 41 degrees C for 90 minutes. Survival was calculated by the Kaplan-Meier method. Survival was also analyzed for the following subgroups: no residual tumor, residual tumor < or = 2.5 mm, and more residual tumor. Hazard ratios for each of the seven abdominal regions were calculated to determine the influence on survival. RESULTS: The median survival was 21.8 months. The 1-, 3-, and 5-year survival rates were 75%, 28%, and 19%, respectively. The Kaplan-Meier curve reached a plateau of 18% at 54 months. In 59 patients a complete cytoreduction was achieved, and in 41 patients there was minimal residual disease. The median survival of these patient groups was 42.9 and 17.4 months, respectively. When gross macroscopic tumor was left behind, as was the case in 17 patients, the median survival was 5 months. Involvement of the small bowel before cytoreduction was associated with poorer outcome. CONCLUSIONS: Cytoreduction followed by HIPEC showed a median survival of 21 months. From 3 years on, a consistent group of 18% of patients stayed alive.


Assuntos
Antibióticos Antineoplásicos/uso terapêutico , Carcinoma/secundário , Neoplasias Colorretais/patologia , Mitomicina/uso terapêutico , Neoplasias Peritoneais/secundário , Antibióticos Antineoplásicos/administração & dosagem , Carcinoma/tratamento farmacológico , Carcinoma/cirurgia , Terapia Combinada , Feminino , Seguimentos , Humanos , Hipertermia Induzida , Infusões Parenterais , Masculino , Pessoa de Meia-Idade , Mitomicina/administração & dosagem , Neoplasias Peritoneais/tratamento farmacológico , Neoplasias Peritoneais/cirurgia , Prognóstico , Análise de Sobrevida , Resultado do Tratamento
8.
J Gastrointest Surg ; 9(2): 178-86, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15694813

RESUMO

The aim of this study was to determine prognostic factors and outcome after liver resection for colorectal metastases in 102 patients over a period of 10 years. A stepwise procedure using proportional hazard regression analysis was used to identify prognostic factors. Estimated survival at 2 years was 71%, and at 5 years, 29% (Kaplan-Meier). Of 19 patients with isolated liver recurrence, 6 had a second metastasectomy; 4 of the 6 are still alive. We found that the number of hepatic lesions on computed tomography (P=0.012), the interval between resection of the primary colon tumor and the hepatic metastasectomy (P=0.012), and synchronicity of the primary and the hepatic metastasis (P=0.048) showed evidence of independent prognostic value regarding survival. Resection of hepatic colorectal metastases may result in long-term survival. Patients with recurrence after a first liver resection may benefit from a repeat metastasectomy. Our data suggest there is no strong predictor of survival. Survival seems to decrease with increasing number of metastases found on computed tomography.


Assuntos
Neoplasias Colorretais/patologia , Hepatectomia , Neoplasias Hepáticas/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/secundário , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Prognóstico , Modelos de Riscos Proporcionais , Análise de Sobrevida
9.
J Surg Oncol ; 86(2): 64-73, 2004 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-15112247

RESUMO

BACKGROUND AND OBJECTIVES: In patients with colorectal cancer, it is important to diagnose peritoneal carcinomatosis as well as to detect location and size of peritoneal tumor dissemination in view of treatment planning. The aim of this study was to investigate the detection accuracy of computed tomography (CT). METHODS: Preoperative CT-scans from 25 consecutive patients with peritoneal carcinomatosis from colorectal or appendiceal origin were independently blindly reviewed by 2 radiologists. The presence and diameter of tumor deposits were noted in seven abdominopelvic areas. Intraoperative findings were regarded as the gold standard. Agreement was assessed using the Kappa index and the chi-square test. RESULTS: The presence of peritoneal carcinomatosis was detected in 60 and 76% of those patients by each of the radiologist. Detection of individual peritoneal implants was poor (kappa = 0.11/0.23) and varied from 9.1%/24.3% for tumor size <1 cm to 59.3%/66.7% for tumor size >5 cm. Overall sensitivity, specificity, accuracy, positive (PPV) and negative predictive value (NPV) for tumor involvement per area were 24.5%/37.3%, 94.5%/90.4%, 53.0%/60.0%, 86.2%/84.4%, and 47.3%/50.8%, respectively. Accuracy of tumor detection varied widely per anatomic site. Statistically significant interobserver differences were noted, specifically for tumor size of 1-5 cm (P = 0.007) and localization on mesentery and small bowel (kappa = 0.30, P = 0.04). CONCLUSIONS: In colorectal cancer, CT detection of peritoneal carcinomatosis is moderate and of individual peritoneal tumor deposits poor. Interobserver differences are statistically significant. Therefore, preoperative CT seems not to be a reliable tool for detection of presence, size, and location of peritoneal tumor implants in view of treatment planning in patients with colorectal cancer.


Assuntos
Neoplasias do Apêndice/patologia , Carcinoma/diagnóstico por imagem , Neoplasias Colorretais/patologia , Neoplasias Peritoneais/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Carcinoma/patologia , Carcinoma/secundário , Feminino , Humanos , Masculino , Variações Dependentes do Observador , Pelve/diagnóstico por imagem , Neoplasias Peritoneais/patologia , Neoplasias Peritoneais/secundário , Valor Preditivo dos Testes , Radiografia Abdominal , Sensibilidade e Especificidade
10.
Plast Reconstr Surg ; 113(6): 1607-16, 2004 May.
Artigo em Inglês | MEDLINE | ID: mdl-15114120

RESUMO

Breast-conserving therapy is widely accepted as an appropriate method of primary treatment of T1 and T2 breast cancers that measure up to 5 cm. For safe and cosmetically acceptable breast-conserving therapy in patients with larger breast cancers, the tumor volume has to be reduced preoperatively, and lost tissue volume should be replaced after wide local excision. In 1993, the authors' group reported encouraging short-term results of a combination of preoperative radiotherapy, breast-conserving surgery, and immediate tissue replacement by myocutaneous (myosubcutaneous) latissimus dorsi flap transplantation in patients with relatively large T2 and T3 breast cancers. To evaluate the long-term oncologic local control and cosmetic outcome of this treatment modality, the authors studied the results obtained in 20 patients after a minimum follow-up of 5 years. The local control rate was 0.95, as locoregional recurrence was observed in one patient who refused adjuvant chemotherapy. Both the observed 5-year survival (0.75) and the actuarial 10-year survival (0.60) in the authors' series equaled that of more radical surgical therapy. The cosmetic outcome compared with that obtained by conventional breast-conserving therapy modalities for small breast cancers. In general, patient assessment of cosmetic outcome (2.8 of 3) was higher than the assessment of a professional panel (6.3 of 10). Of six criteria providing a detailed description of the cosmesis of the reconstructed breast and donor area, the symmetry and shape of the reconstructed breast were felt to be most important by the patients and professionals alike. The authors conclude that breast-conserving therapy combining preoperative irradiation and immediate myocutaneous (myosubcutaneous) latissimus dorsi flap reconstruction is an oncologically safe and cosmetically rewarding but logistically straining modality of treatment of relatively large T2 and T3 breast cancers.


Assuntos
Neoplasias da Mama/cirurgia , Estética , Mastectomia Segmentar , Adulto , Idoso , Neoplasias da Mama/mortalidade , Neoplasias da Mama/patologia , Neoplasias da Mama/radioterapia , Terapia Combinada , Estudos de Viabilidade , Feminino , Seguimentos , Humanos , Mamoplastia , Pessoa de Meia-Idade , Satisfação do Paciente , Retalhos Cirúrgicos , Taxa de Sobrevida , Resultado do Tratamento
12.
Ann Surg Oncol ; 11(4): 375-9, 2004 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15070596

RESUMO

BACKGROUND: After treatment of peritoneal carcinomatosis of colorectal cancer origin by cytoreduction and hyperthermic intraperitoneal chemotherapy (HIPEC), recurrences develop in approximately 80% of patients. This study evaluates the outcome of such recurrences after initial treatment by cytoreduction and HIPEC. METHODS: Between November 1995 and May 2003, 106 patients underwent cytoreduction and HIPEC. The progression-free interval, the location of the recurrence, and its treatment were recorded. Factors potentially related to survival after recurrences were studied. RESULTS: Sixty-nine patients had a recurrence within the study period. For patients who had undergone a gross incomplete initial cytoreduction, the median duration of survival after recurrence was 3.7 months (standard error of the mean [SE], .3). If a complete cytoreduction had been accomplished initially, the median duration of survival after the recurrence was 11.1 months (SE, .9). A shorter interval between HIPEC and recurrence was associated with shorter survival after treatment of recurrence (hazard ratio, .94; SE, .02). After effective initial treatment, a second surgical debulking for recurrent disease resulted in a median survival duration of 10.3 months (SE, 1.9), and after treatment with chemotherapy it was 8.5 months (SE, 1.6). The survival was 11.2 months (SE, .5) for patients who received radiotherapy for recurrent disease. Patients who did not receive further treatment survived 1.9 months (SE, .3). CONCLUSIONS: Treatment of recurrence after cytoreduction and HIPEC is often feasible and seems worthwhile in selected patients. Selection should be based mainly on the completeness of initial cytoreduction and the interval between HIPEC and recurrence.


Assuntos
Carcinoma/terapia , Neoplasias Colorretais/terapia , Neoplasias Peritoneais/terapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma/tratamento farmacológico , Carcinoma/cirurgia , Quimioterapia Adjuvante , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/cirurgia , Terapia Combinada , Feminino , Humanos , Hipertermia Induzida , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Neoplasias Peritoneais/secundário , Neoplasias Peritoneais/cirurgia , Modelos de Riscos Proporcionais , Estudos Prospectivos , Análise de Sobrevida , Resultado do Tratamento
13.
J Surg Oncol ; 85(2): 61-7, 2004 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-14755505

RESUMO

BACKGROUND AND OBJECTIVES: Cytoreduction with hyperthermic intra-peritoneal chemotherapy (HIPEC) is a treatment with a high morbidity. Optimal patients selection can possible reduce toxicity and complications. PATIENTS AND METHODS: Complications and toxicity of 102 patients were studied. Toxicity was graded according National Cancer Institute Common Toxicity Criteria (NCI CTC) classification. A complication was defined as any post-operative event that needed re-intervention. Potential patients, tumor, and treatment factors were studied on their relation to complications. RESULTS: Grade 3, 4, or 5 toxicity was observed in 66 patients (65%). Eight patients died of treatment-related causes. Surgical complications occurred in 36 patients (35%). Fistulae were frequently encountered (18 patients). The risk of a complicated recovery was higher in carcinomatosis with recurrent colorectal cancer (P = 0.009) and in the case of more than five regions affected (P = 0.044), who had a Simplified Peritoneal Cancer (SPC) score of 13 (P = 0.012) and with an incomplete initial cytoreduction (P = 0.035). Patients with blood loss exceeding 6 L (P = 0.028) and those with three or more anastomoses also had an increased post-operative complication rate (P = 0.018). CONCLUSIONS: Toxicity of cytoreduction followed by HIPEC was 65% (Grade 3-5 NCI CTC), with a surgical complication rate of 35%. Patients with six or seven regions involved and those in whom complete cytoreduction cannot be reached are probably better off without this treatment.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma/tratamento farmacológico , Carcinoma/cirurgia , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/cirurgia , Neoplasias Peritoneais/tratamento farmacológico , Neoplasias Peritoneais/cirurgia , Adulto , Idoso , Neoplasias do Apêndice , Carcinoma/patologia , Ceco/cirurgia , Quimioterapia Adjuvante , Neoplasias Colorretais/patologia , Feminino , Fluoruracila/administração & dosagem , Humanos , Hipertermia Induzida , Histerectomia , Infusões Parenterais , Intestino Delgado/cirurgia , Leucovorina/administração & dosagem , Masculino , Pessoa de Meia-Idade , Neoplasias Peritoneais/patologia , Complicações Pós-Operatórias/epidemiologia , Náusea e Vômito Pós-Operatórios/etiologia , Reto/cirurgia , Análise de Sobrevida
15.
Clin Pharmacokinet ; 43(2): 131-43, 2004.
Artigo em Inglês | MEDLINE | ID: mdl-14748621

RESUMO

BACKGROUND: During recent years, cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy (HIPEC) with mitomycin has been used for various malignancies. OBJECTIVE: To characterise the population pharmacokinetics and pharmacodynamics of mitomycin during HIPEC. METHODS: Forty-seven patients received mitomycin 35 mg/m2 intraperitoneally as a perfusion over 90 minutes. Mitomycin concentrations were determined in both the peritoneal perfusate and plasma. The observed concentration-time profiles were used to develop a population pharmacokinetic model using nonlinear mixed-effect modelling (NONMEM). The area under the plasma concentration-time curve (AUC) was related to the haematological toxicity. RESULTS: Concentration-time profiles of mitomycin in perfusate and plasma were adequately described with one- and two-compartment models, respectively. The average volume of distribution of the perfusate compartment (V1) and rate constant from the perfusate to the systemic circulation (k12) were 4.5 +/- 1.1L and 0.014 +/- 0.003 min(-1), respectively (mean +/- SD, n = 47). The average volume of distribution of the central plasma compartment (V2), clearance from the central compartment (CL) and volume of distribution of the peripheral plasma compartment (V3) were 28 +/- 16L, 0.55 +/- 0.18 L/min and 36 +/- 8L, respectively. The relationship between the AUC in plasma and degree of leucopenia was described with a sigmoidal maximum-effect (Emax) model. CONCLUSIONS: The pharmacokinetics of mitomycin during HIPEC could be fitted successfully to a multicompartment model. Relationships between plasma exposure and haematological toxicity were quantified. The developed pharmacokinetic-pharmacodynamic model can be used to simulate different dosage schemes in order to optimise mitomycin administration during HIPEC.


Assuntos
Antibióticos Antineoplásicos/farmacocinética , Neoplasias Colorretais/cirurgia , Hipertermia Induzida/métodos , Mitomicina/farmacocinética , Antibióticos Antineoplásicos/administração & dosagem , Antibióticos Antineoplásicos/farmacologia , Área Sob a Curva , Teorema de Bayes , Neoplasias Colorretais/tratamento farmacológico , Feminino , Humanos , Hipertermia Induzida/instrumentação , Período Intraoperatório , Leucopenia/induzido quimicamente , Masculino , Taxa de Depuração Metabólica , Pessoa de Meia-Idade , Mitomicina/administração & dosagem , Mitomicina/farmacologia , Distribuição Tecidual
16.
Am J Surg ; 187(1): 33-8, 2004 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-14706583

RESUMO

BACKGROUND: The incidence of plantar fibromatosis (PF) is unknown. Sometimes PF tends to recur repetitively after surgical treatment. In our institute we have used postoperative radiotherapy in an attempt to diminish the change on recurrence. METHODS: The Dutch Network and National Database for Pathology (PALGA) was consulted to establish the incidence of plantar fibromatosis (PF). Data from 9 patients (11 feet) with PF referred to our institute for recurrent disease were analyzed and the role of postoperative radiotherapy in prevention of recurrence was studied. RESULTS: An average of 1.2 operations for PF was performed per 100,000 citizens yearly in the Netherlands. Twenty-six operations were performed and postoperative radiotherapy was used in 6 cases. Plantar fasciectomy was associated with the lowest recurrence rate. After microscopically incomplete excision or excision of early recurrence (< or =6 months) alone all tumors recurred, while recurrence was rarely observed after adjuvant radiotherapy. However, radiotherapy was associated with significantly impaired functional outcome in 3 cases. CONCLUSIONS: Plantar fibromatosis is relatively rare. Plantar fasciectomy seems to be the operation of choice. Although effective in decreasing the recurrence rate, adjuvant radiotherapy should be used very selectively because of its serious side effects.


Assuntos
Fibroma/radioterapia , Fibroma/cirurgia , Doenças do Pé/radioterapia , Doenças do Pé/cirurgia , Recidiva Local de Neoplasia/radioterapia , Recidiva Local de Neoplasia/cirurgia , Adolescente , Adulto , Criança , Terapia Combinada , Feminino , Fibroma/epidemiologia , Doenças do Pé/epidemiologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/epidemiologia , Cuidados Pós-Operatórios , Fatores de Risco
17.
J Clin Oncol ; 21(20): 3737-43, 2003 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-14551293

RESUMO

PURPOSE: To confirm the findings from uncontrolled studies that aggressive cytoreduction in combination with hyperthermic intraperitoneal chemotherapy (HIPEC) is superior to standard treatment in patients with peritoneal carcinomatosis of colorectal cancer origin. PATIENTS AND METHODS: Between February 1998 and August 2001, 105 patients were randomly assigned to receive either standard treatment consisting of systemic chemotherapy (fluorouracil-leucovorin) with or without palliative surgery, or experimental therapy consisting of aggressive cytoreduction with HIPEC, followed by the same systemic chemotherapy regime. The primary end point was survival. RESULTS: After a median follow-up period of 21.6 months, the median survival was 12.6 months in the standard therapy arm and 22.3 months in the experimental therapy arm (log-rank test, P =.032). The treatment-related mortality in the aggressive therapy group was 8%. Most complications from HIPEC were related to bowel leakage. Subgroup analysis of the HIPEC group showed that patients with 0 to 5 of the 7 regions of the abdominal cavity involved by tumor at the time of the cytoreduction had a significantly better survival than patients with 6 or 7 affected regions (log-rank test, P <.0001). If the cytoreduction was macroscopically complete (R-1), the median survival was also significantly better than in patients with limited (R-2a), or extensive residual disease (R-2b; log-rank test, P <.0001). CONCLUSION: Cytoreduction followed by HIPEC improves survival in patients with peritoneal carcinomatosis of colorectal origin. However, patients with involvement of six or more regions of the abdominal cavity, or grossly incomplete cytoreduction, had still a grave prognosis.


Assuntos
Carcinoma/terapia , Neoplasias Colorretais/terapia , Neoplasias Peritoneais/terapia , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica , Carcinoma/tratamento farmacológico , Carcinoma/cirurgia , Quimioterapia Adjuvante , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/cirurgia , Terapia Combinada , Feminino , Humanos , Hipertermia Induzida , Injeções Intraperitoneais , Masculino , Pessoa de Meia-Idade , Cuidados Paliativos , Neoplasias Peritoneais/secundário , Neoplasias Peritoneais/cirurgia , Resultado do Tratamento
18.
Ann Thorac Surg ; 75(6): 1715-8; discussion 1718-9, 2003 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12822605

RESUMO

BACKGROUND: Patients with localized malignant pleural mesothelioma (MPM) can be considered for surgical resection with or without additional treatment. For this approach it is imperative to select patients without mediastinal lymph node involvement. In this study cervical mediastinoscopy (CM) is compared with computer tomography (CT) scanning for its diagnostic accuracy in assessing mediastinal lymph nodes during preoperative workup. METHODS: Computer tomography scans of the chest and CM were performed in 43 patients with proven unilateral MPM. The CT scans were reviewed by one radiologist and two chest physicians. At CM the lymph node samples were taken from stations Naruke 2, 3, 4, and 7. Computer tomography and CM results were compared with final histopathologic findings obtained at thoracotomy or, if this was not performed, at CM. RESULTS: Computer tomography scanning revealed pathologic enlarged lymph nodes with a shortest diameter of at least 10 mm in 17 of 43 patients (39%). There was histopathologic evidence of lymph node metastases at CM in 11 of these patients (26%). This resulted in a sensitivity of 60% and 80%, a specificity of 71% and 100%, and a diagnostic accuracy of 67% and 93% for CT and CM, respectively. CONCLUSIONS: Cervical mediastinoscopy is a valuable diagnostic procedure for patients with MPM who are considered candidates for surgical-based therapy. Results of CM are more reliable than those obtained by CT scanning. Our data confirm results of previous studies reporting that mediastinal lymph node involvement is a frequent event in MPM.


Assuntos
Mediastinoscopia , Mesotelioma/cirurgia , Neoplasias Pleurais/cirurgia , Tomografia Computadorizada por Raios X , Adulto , Idoso , Feminino , Humanos , Linfonodos/patologia , Metástase Linfática/patologia , Masculino , Mesotelioma/diagnóstico , Mesotelioma/patologia , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Equipe de Assistência ao Paciente , Seleção de Pacientes , Neoplasias Pleurais/diagnóstico , Neoplasias Pleurais/patologia , Cuidados Pré-Operatórios , Sensibilidade e Especificidade , Toracotomia
20.
Chest ; 123(2): 551-61, 2003 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-12576380

RESUMO

Despite many years of clinical research, there is still no effective therapy for malignant pleural mesothelioma (MPM). Untreated, the prognosis is poor, with a median survival of < 1 year. Single-agent or combination chemotherapy as well as radiotherapy have not shown persistent improvements in response or survival. In general, MPM is a disease confined to the pleural cavity for a long time before metastasizing. Therefore, focus on local treatment seems rational. Surgical resection has been considered the mainstay of treatment by some. However, surgery alone results in high recurrence rates, and the survival benefit remains questionable. In recent years, the emphasis has been on surgery combined with adjuvant therapies. In this article, the present state of surgical management of MPM will be reviewed.


Assuntos
Mesotelioma/cirurgia , Neoplasias Pleurais/cirurgia , Quimioterapia Adjuvante , Terapia Combinada , Humanos , Mesotelioma/tratamento farmacológico , Mesotelioma/mortalidade , Mesotelioma/radioterapia , Neoplasias Pleurais/tratamento farmacológico , Neoplasias Pleurais/mortalidade , Neoplasias Pleurais/radioterapia , Radioterapia Adjuvante , Taxa de Sobrevida , Resultado do Tratamento
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