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  • 11
    Electronic Resource
    Electronic Resource
    Springer
    World journal of surgery 12 (1988), S. 340-344 
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs ont étudié 23 cas de désarticulations proximales pour sarcome en ayant pour but d'apprécier la valeur de l'intervention, la désarticulation étant précédée de radiothérapie et de chimiothérapie. Les critères retenus furent: l'existence de récidives, la survie et la qualité de la vie. La série a concerné 14 sarcomes des parties molles, 9 sarcomes des os. Dans 11 cas il s'agissait d'une tumeur primitive, dans 13 cas de récidives tumorales. Sur ce groupe de malades, 18 avaient été traités par une intervention limitée, 11 par radiothérapie, et 10 par chimiothérapie. En ce qui concerne le membre supérieur, 6 ont été traités par désarticulations inter-scapulo-thoraciques, et 3 par une résection inter-scapulo-thoracique selon la technique de Tikhoff-Linberg. En ce qui concerne le membre inférieur, 8 malades ont été soumis à une désarticulation interilio-abdominale, 3 à une désarticulation ilio-coxo-fémorale, et 1 à une hémipelvectomie interne selon la technique de Eilber. La moyenne de durée de vie normale a été de 34 mois et la moyenne de la durée de la survie de 38.5 mois. Trois (15%) des 20 malades qui ont été revus ont présenté une récidive locale mais la majorité d'entre eux ont pu bénéficier d'une réintervention. La qualité de la vie a été excellente en général bien que 8 opérés seulement aient accepté le port d'une prothèse. L'index de Karnofsky a varié de 60 à 100%. Aucune différence significative n'a été observée que le malade ait été soumis ou non à la radiothérapie et/ou à la chimiothérapie.
    Abstract: Resumen Los autores han revisado 23 pacientes con desarticulaciónes proximales con el propósito de determinar el valor terapéutico en el sarcoma, habida consideración a radioterapia y quimioterapia previas. Los siguientes criterios fueron específicamente analizados: recurrencia, supervivencia, y calidad de la vida. La serie incluyó 14 sarcomas de tejidos blandos, y 9 sarcomas óseos. En 11 casos el tumor era primario y aparecía tratado por primera vez, y en 12 casos el tumor era recurrente. Diez y ocho pacientes habían sido previamente tratados con cirugía no radical, 11 con radioterapia, y 10 con quimioterapia. En cuanto a los tumores del miembro superior, 6 pacientes fueron sometidos a desarticulación interescápulotorácica, y 3 a resección interescapulotorácica según Tikhoff-Linberg. En cuanto a los tumores del miembro inferior, 8 pacientes fueron sometidos a desarticulación interilioabdominal, 3 a desarticulación coxofemoral, y 1 a hemipelvectomía interna según Eilber. El promedio de estado libre de enfermedad ha sido 34 meses, y el promedio de supervivencia, 38.5 meses. Tres (15%) de 20 pacientes valorables presentaron recurrencia aunque la mayoría de ellos se benefició con una segunda operación. En general, la calidad de la vida ha sido excelente a pesar de que solamente 8 pacientes aceptaron usar prótesis. El índice de Karnofsky osciló entre 60 y 100%. No se observó diferencia entre los pacientes que habían recibido radioterapia y/o quimioterapia y los que no la recibieron.
    Notes: Abstract The authors have reviewed 23 patients with proximal disarticulations with the aim of assessing the therapeutic value in sarcoma, taking into account previous radio- and chemotherapy. The following criteria were especially examined: recurrences, survival, and quality of life. There were 14 soft tissue sarcomas, and 9 bone sarcomas. In 11 cases, the tumor was primary and treated for the first time while, in 12 cases, it was recurrent. Eighteen patients had been previously treated by nonradical surgery, 11 by radiotherapy, and 10 by chemotherapy. For upper limb tumors, 6 patients underwent an interscapulothoracic disarticulation, and 3 an interscapulothoracic resection according to Tikhoff-Linberg. For lower limb tumors, 8 patients were submitted to interilioabdominal disarticulation, 3 to coxofemoral disarticulation, and 1 to internal hemipelvectomy according to Eilber. The mean disease-free interval has been 34 months, and the mean survival, 38.5 months. Three (15%) of 20 evaluable patients recurred locally, although most of them benefited from second surgery. Quality of life has been excellent, in general, despite the fact that only 8 patients accepted to wear a prosthesis. The Karnofsky index ranged from 60 to 100%. No significant difference was seen, whether or not previous radio- and/or chemotherapy had been administered.
    Type of Medium: Electronic Resource
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  • 12
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Certaines tumeurs malignes osseuses sélectionnées avec attention relèvent de nos jours d'une résection radicale en bloc complétée par la chimiothérapie. Des autogreffes osseuses bien vascularisées peuvent être employées pour procéder à la reconstruction d'un segment de squelette réséqué. Ces greffes présentent outre les mêmes avantages que les greffes non vascularisées le fait que leur viabilité est conservée. Le péroné constitue le greffon osseux de choix. La technique chirurgicale suivie par les auteurs ainsi que les avantages et la limitation des indications des greffes osseuses vascularisées sont étudiées et discutées dans l'article.
    Abstract: Resumen En pacientes seleccionados de tumores óseos malignos localizados se puede realizar la resección en bloque con quimioterapia adyuvante, y es posible utilizar autoinjertos vascularizados de hueso para la reconstrucción secundaria del defecto óseo. La técnica del autoinjerto óseo vascularizado ha sido desarrollada en un esfuerzo por evitar los problemas de la revascularización de los injertos óseos convencionales. Los injertos óseos vascularizados poseen las ventajas de los no vascularizados, y todas las ventajas de la conservación de su viabilidad. Los injertos vascularizados, siendo independientes de la vecina vascularidad del lecho recipiente, parecen tolerar bien la irradiación y son resistentes a la infección. El peroné es generalmente el hueso más adecuado para servir como donante. Debido al estado vascular de la extremidad, no siempre es posible utilizar un injerto óseo vascularizado para la reconstrucción. El papel primordial del cirujano debe ser el de resecar el tumor maligno con márgenes adecuados de tejido normal, tanto de tejidos blandos como de hueso. Este objetivo no debe verse comprometido por tratar de preservar vasos que puedan permitir la reconstrucción con un injerto óseo vascularizado. En este artículo se discuten los aspectos de nuestra técnica quirúrgica y las ventajas y limitaciones de los injertos óseos vascularizados.
    Notes: Abstract In selected patients with localized malignant bone tumors, radical en bloc resection with adjuvant chemotherapy is now performed. Vascularized bone autografts can be used for secondary reconstruction of the bone defect. These grafts have the advantages of the nonvascularized ones, as well as the advantages of preserved viability. The fibula is usually the most suitable donor bone. Our surgical technique and the advantages and limitations of vascularized bone grafts are discussed.
    Type of Medium: Electronic Resource
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  • 13
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The effects of Piribedil on central dopaminergic receptors were compared with the effects elicited by 3 metabolites of this drug. One of them S-584=[1-(2-pyrimidyl)-4 (3–4 dihydroxyphenyl) piperazine] showed dopaminergic stimulant properties when administered by the i.p. route, in unilateral nigro-neostriatal lesioned rats. Other metabolites: S 3284=[1-(2-pyrimidyl)1N-oxydo-4 piperonyl piperazine] and S 3473=[1-(5 hydroxy 2 pyrimidyl)-4 piperonyl piperazine] were ineffective.
    Type of Medium: Electronic Resource
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  • 14
    ISSN: 1569-8041
    Keywords: advanced stages ; combined modality therapy ; Hodgkin's disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The treatment of Hodgkin's disease (HD) at advanced stages relies mainly upon multi-agent chemotherapies (CT), while the role of radiation therapy has not been definitely identified. The aim of this report is to analyze the 10-year results of a prospective study including 133 patients with HD clinical stages (CS) IIIA to IVB treated by three monthly courses of ABVD (adriamycin, bleomycin, vinblastin, and dacarbazine) followed by high-dose subtotal or total lymphoid irradiation [(S)TLI]. Patients and methods: From 1 October 1981 to 30 September 1988, 133 adult patients with HD CS IIIA (45), IIIB (33), IVA (seven) and IVB (48) were entered in the non-randomized multicentric prospective trial POF81/34. The number of involved nodal areas (NINA), and the number of visceral sites (NVIS) involved were registered in all patients; patients with bulky mediastinal tumor (BuMT) (mediastinal mass ratio ≥0.45) were also identified. All patients received three monthly cycles of ABVD. Patients in complete remission (CR) or partial remission (PR) after completion of CT received a (S)TLI including the spleen (involved sites 40 Gy, non-involved 30 Gy); initially involved lung(s) and liver received 18 and 20 Gy, respectively; and patients not in CR or PR after CT or RT received salvage treatments. Univariate and multivariate analyses were performed to identify the factors contributing significantly to the prognosis; initial characteristics, as well as status after the three cycles of CT, were entered in the model. Results: Of the 133 patients, 74 (55.6%) entered in CR after CT and 116 (87.2%) after completion of radiation therapy. Ten-year freedom from progression (FFP), freedom from tumor mortality (FFTM) and survival rates were 70.4%, 78.9% and 70.6%, respectively. According to univariate analysis the NVIS (≤ one vs. ≥ two) was the only initial factor simultaneously influencing 10-year FFP (73.9% vs. 38.2%) FFTM (82.5 vs. 34.1%) and survival (73.5% vs. 17.3%) rates; on the other hand, the NINA (≤ four vs. ≥ five) influenced FFP (81.4% vs. 60.7%) and FFTM rates (87.3% vs. 71.4%) while symptoms (A vs. B) influenced FFP (80.7% vs. 63.3%) and survival (82.8% vs. 61.2%) rates. Finally, age (〈40 vs. ≥40) influenced survival rate only (79.2% vs. 50%). According to multivariate analysis, NVIS and NINA had an independent impact on FFP and FFTM, while survival was modified by the NVIS and age. The post-CT status (CR vs. no CR) had a major impact on FFP (85.3% vs. 64.9%) FFTM (92.1% vs. 63.3%) as well as on survival (78.6% vs. 54.7%) rates in both univariate and multivariate analyses. Complications of therapy were mainly due to RT: 11 patients acquired second malignancies, six developed lung fibrosis or severe pulmonary infections, three developed intestinal obstructions and six developed angina pectoris or carotid stenosis. Conclusions: Tumor burden (identified by the number of involved nodal areas and the number of visceral sites) and the response to initial CT were the two independent factors influencing the outcome of this group of 133 patients with HD, CSIII and IV treated by three cycles of ABVD followed by high-dose [(S)TLI].
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Springer
    Annals of oncology 9 (1998), S. 790-790 
    ISSN: 1569-8041
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 16
    ISSN: 1569-8041
    Keywords: melanoma ; pharmacodynamics ; pharmacokinetics ; temozolomide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The DNA repair protein O6-alkylguanine-DNA alkyl transferase (AT) mediates resistance to chloroethylnitrosoureas. Agents depleting AT such as DTIC and its new analogue temozolomide (TMZ) can reverse resistance to chloroethylnitrosoureas. We report the results of a dose finding study of TMZ in association with fotemustine. Patients and methods: Twenty-four patients with metastatic melanoma or recurrent glioma were treated with escalating dose of oral or intravenous TMZ ranging from 300 to 700 mg/m2, divided over two days. Fotemustine 100 mg/m2 was given intravenously on day 2, 4 hours after TMZ. AT depletion was measured in peripheral blood mononuclear cells (PBMCs) and in selected cases in melanoma metastases and was compared to TMZ pharmacokinetics. Results: The maximum tolerated dose (MTD) of TMZ was 400 mg/m2 (200 mg/m2/d) when associated with fotemustine the 2nd day with myelosuppression as dose limiting toxicity. The decrease of AT level in PBMCs was progressive and reached 34% of pretreatment values on day 2. There was however wide interindividual variability. AT reduction was neither dose nor route dependent and did not appear to be related to TMZ systemic exposure (AUC). In the same patients, AT depletion in tumour did not correlate with the decrease of AT observed in PBMCs. Conclusions: PBMCs may not be used as a surrogate of tumour for AT depletion. Further study should concentrate on the pharmacokinetic pharmacodynamic relationship in tumour to provide the basis for individually tailored therapy.
    Type of Medium: Electronic Resource
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  • 17
    ISSN: 0730-2312
    Keywords: melanoma ; TNFα ; isolation perfusion ; melphalan ; interferon-γ ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Recombinant tumor necrosis factor-alpha (rTNFα) has potent antitumor activity in experimental studies on human tumor xenografts. However, in humans, the administration of rTNFα is hampered by severe systemic side-effects. The maximum tolerated dose range from 350 to 500 mg/m2, which is at least 10-fold less than the efficient dose in animals. Isolation perfusion of the limbs (ILP) allows the delivery of high dose rTNFα in a closed system with acceptable side-effects. A protocol with a triple-drug regimen was based on the reported synergism of rTNFα with chemotherapy, with interferon-y, and with hydperthermia. In melanoma-in-transit metastases (stage IIIA or AB) we obtained a 91% complete response, compared with 52% after ILP with melphalan alone. Release of nanograms levels of TNFα in the systemic circulation was evident but control of this leakage and appropriate intensive care resulted in acceptable toxicity. Angiographic, immunohistological, and immunological studies suggest that the efficacy of this prtocol is due to a dual targeting: rTNFα activates and electively lyses the tumor endothelial cells while melphalan is mainly cytoxic to the tumor cells. ILP with rTNFα appears to be a useful model for studying the biochemotherapy of cancer in man.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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