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1.
J Eur Acad Dermatol Venereol ; 36(3): 360-364, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34816498

RESUMO

Medical device (MD) is a broad term that encompasses products ranging from, for example, examination gloves to digital dermoscopy systems; all of which are regulated by a new regulatory framework in the EU from May 2021. The new Medical Device Regulation (MDR) (Regulation EU 2017/745) will have a significant effect on suppliers of MD and will have subsequent effects also for dermatologists and other clinicians. Medical device software and apps are reclassified leading to more stringent requirements on documentation within, e.g. clinical evidence, as well as regulatory authority control. The changes will likely have positive effects on quality, to the benefit of patients. There will, however, be implications affecting the availability and support of existing devices and the introduction of new devices, as well as a likely price increase due to the higher costs for suppliers. Dermatologists, other clinicians and administrators need to be aware of the effects of MDR to ensure that existing devices and new purchases can be used as planned. Specifically, clinicians need to be aware of the following: (i) improved quality of MD and follow-up of incidents can be expected. (ii) Only 'non-significant' updates will be permitted after May 2021 to many existing systems and devices unless approved under the new MDR. (iii) Existing devices that do not achieve approval under the new regulation will no longer be manufactured after May 2024. (iv) New products and methods will take longer time to be approved and available. (v) Prices will likely increase. (vi) Suppliers of products that do not fulfil the new regulation will disappear, and the availability of consumables, spare parts or upgrades might be discontinued. (vii) A trend to oligopoly may appear in the market. It is therefore important to check with your suppliers as to how and when they will adhere to the new MDR regulation.


Assuntos
Dermatologia , Legislação de Dispositivos Médicos , Humanos , Software
3.
J Thorac Cardiovasc Surg ; 122(4): 788-95, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11581615

RESUMO

BACKGROUND: Surgical resection of malignant pleural mesothelioma is reported to have up to an 80% rate of local recurrence. We performed a phase II trial of high-dose hemithoracic radiation after complete resection to determine feasibility and to estimate rates of local recurrence and survival. METHODS: Patients were eligible if they had a resectable tumor, as determined by computed tomographic scanning, and adequate cardiopulmonary function for extrapleural pneumonectomy or pleurectomy/decortication. After complete resection, patients received hemithoracic radiation (54 Gy) and then were followed up with serial computed tomographic scanning. RESULTS: From 1995 to 1998, 88 patients (73 men and 15 women; median age, 62.5 years) were entered into the study. The operations performed included 62 extrapleural pneumonectomies (70%) and 5 pleurectomies/decortications; procedures for exploration only were performed in 21 patients. Seven (7.9%) patients died postoperatively. Adjuvant radiation administered to 57 patients (54 undergoing extrapleural pneumonectomy and 3 undergoing pleurectomy/decortication) at a median dose of 54 Gy was well tolerated (grade 0-2 fatigue, esophagitis), except for one late esophageal fistula. The median survival was 33.8 months for stage I and II tumors but only 10 months for stage III and IV tumors (P =.04). For the patients undergoing extrapleural pneumonectomy, the sites of recurrence were locoregional in 2, locoregional and distant in 5, and distant only in 30. CONCLUSION: Hemithoracic radiation after complete surgical resection at a dose not previously reported is feasible. This approach dramatically reduces local recurrence and is associated with prolonged survival for early-stage tumors. Stage III disease has a high risk of early distant relapse and should be considered for trials of systemic therapy added to this regimen of resection and radiation.


Assuntos
Irradiação Hemicorpórea , Mesotelioma/radioterapia , Mesotelioma/cirurgia , Neoplasias Pleurais/radioterapia , Neoplasias Pleurais/cirurgia , Adulto , Idoso , Protocolos Clínicos , Estudos de Viabilidade , Feminino , Humanos , Masculino , Mesotelioma/mortalidade , Pessoa de Meia-Idade , Neoplasias Pleurais/mortalidade , Estudos Prospectivos , Radioterapia Adjuvante , Taxa de Sobrevida
4.
Ann Thorac Surg ; 72(4): 1149-54, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11603428

RESUMO

BACKGROUND: The risks of complications in patients undergoing thoracotomy after neoadjuvant therapy for nonsmall cell lung cancer remain controversial. We reviewed our experience to define it further. METHODS: All patients undergoing thoracotomy after induction chemotherapy from 1993 through 1999 were reviewed. Univariate and multivariate methods for logistic regression model were used to identify predictors of adverse events. RESULTS: Induction chemotherapy included mitomycin, vinblastine, and cisplatin (179 patients), carboplatin and paclitaxel (152 patients), and other combinations (139 patients). Eighty-five patients (18%) received preoperative radiation. Operations were pneumonectomy (97 patients), lobectomy (297 patients), lesser resection (18 patients), and exploration only (58 patients). Total mortality was 7 of 297 (2.4%) and 11 of 97 (11.3%) for all lobectomies and pneumonectomies, respectively, but mortality was 11 of 46 (23.9%) for right pneumonectomy. Complications developed in 179 patients (38%). By multiple regression analysis, right pneumonectomy (p = 0.02), blood loss (p = 0.01), and forced expiratory volume in one second (percent predicted) (p = 0.01) predicted complications. No factor emerged to explain this high right pneumonectomy mortality rate. CONCLUSIONS: Pulmonary resection after neoadjuvant therapy is associated with acceptable overall morbidity and mortality. However, right pneumonectomy is associated with a significantly increased risk and should be performed only in selected patients.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/cirurgia , Neoplasias Pulmonares/cirurgia , Terapia Neoadjuvante/efeitos adversos , Pneumonectomia/efeitos adversos , Complicações Pós-Operatórias/mortalidade , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma Pulmonar de Células não Pequenas/mortalidade , Carcinoma Pulmonar de Células não Pequenas/patologia , Terapia Combinada , Feminino , Mortalidade Hospitalar , Humanos , Neoplasias Pulmonares/mortalidade , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Risco , Análise de Sobrevida
5.
Chest ; 120(3): 1021-2, 2001 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11555542

RESUMO

Near-drowning syndrome depends on the duration of submersion, the amount of fluid aspirated, and the severity of hypoxia. We report a case in which a patient developed ARDS shortly after undergoing a left upper lobectomy and a chest wall resection for a lung carcinoma. On further investigation, the ARDS was caused by near-drowning in a basin of freshwater: the patient's face was submerged by the patient's companion as part of a cultural tradition of trying to clean his lung. We believe that this case presents the etiology of freshwater near-drowning syndrome due to an ethnogenic practice not previously reported.


Assuntos
Cultura , Afogamento Iminente/etiologia , Complicações Pós-Operatórias , Síndrome do Desconforto Respiratório/etiologia , Idoso , Humanos , Inalação , Coreia (Geográfico) , Neoplasias Pulmonares/cirurgia , Masculino , Pneumonectomia
6.
Jpn J Thorac Cardiovasc Surg ; 49(7): 443-8, 2001 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11517580

RESUMO

OBJECTIVE: This study was designed to evaluate the toxicity and the pharmacokinetics of cisplatin administered via isolated lung perfusion in Fischer 344 rat. METHODS: Toxicity study; Cisplatin dosages of 3.3, 5.0, 6.7, and 10.0 mg/kg were injected intravenously in four groups, respectively. Cisplatin dosages of 3.3, 5.0, and 6.7 mg/kg were perfused via isolated lung perfusion in a further three groups, respectively. The maximum tolerated dosage of cisplatin was determined by assessing the survival rate on day 21. Pharmacokinetics study; Animals received 6.7 mg/kg of cisplatin intravenously or 3.3 mg/kg of cisplatin via isolated lung perfusion. The cisplatin levels of the lung were measured by flameless atomic spectrometry. RESULTS: Toxicity study; The maximum tolerated dosage of cisplatin via intravenous injection was 6.7 mg/kg, and via isolated lung perfusion was 3.3 mg/kg. Pharmacokinetics study; The cisplatin level in the perfused lung was significantly higher than that in the lung of the animal treated intravenously (16.6 +/- 6.2 micrograms/g of tissue and 7.5 +/- 3.2 micrograms/g of tissue, respectively) (p = 0.0096). CONCLUSION: Isolated lung perfusion with 3.3 mg/kg of cisplatin was pharmacokinetically superior to the maximum tolerated intravenous injection of cisplatin.


Assuntos
Cisplatino/farmacocinética , Cisplatino/toxicidade , Pulmão/efeitos dos fármacos , Animais , Cisplatino/administração & dosagem , Tolerância a Medicamentos , Técnicas In Vitro , Injeções Intravenosas , Pulmão/metabolismo , Masculino , Perfusão , Ratos , Ratos Endogâmicos F344
7.
Chest Surg Clin N Am ; 11(2): 421-37, 2001 May.
Artigo em Inglês | MEDLINE | ID: mdl-11413765

RESUMO

Although thymoma is an uncommon tumor, it represents the most frequently encountered tumor of the anterior mediastinum. These tumors represent an interesting and even peculiar group of lesions by virtue of their association with paraneoplastic disorders, their relatively indolent course, and their predisposition for local recurrence. The initial treatment of choice for patients with thymoma that do not present with unresectable local or diffuse metastatic disease is complete surgical resection. The goals of surgery are complete excision of the lesion with total thymectomy and complete exploration to rule out the presence of noncontiguous disease that may be resectable. Often, complete resection may require the resection of surrounding involved structures including pericardium, pleura, lung, and even major vascular structures. Some authors have suggested VATS or VATS-assisted techniques for small thymomas. Capsular invasion, however, often can be subtle, and the completeness of resection is of prime importance in countless studies. With recurrences appearing up to 5 and even 10 years postoperatively, time will tell if these minimally invasive techniques are comparable with current standard approaches. Multiple studies have failed to determine conclusively the role of induction chemotherapy and adjuvant radiation. Prospective multi-institutional trials are required to elucidate further the role of such therapies in these rare tumors. In the interim, the authors continue to recommend postoperative radiation for all patients undergoing resection with the exception of stage I patients. Some promising reports on response to chemotherapy have led them to develop an induction chemotherapy protocol for patients with clinically advanced disease.


Assuntos
Timoma/cirurgia , Neoplasias do Timo/cirurgia , Terapia Combinada , Humanos , Estadiamento de Neoplasias , Timectomia/métodos , Timoma/diagnóstico , Timoma/patologia , Neoplasias do Timo/diagnóstico , Neoplasias do Timo/patologia
8.
World J Surg ; 25(2): 184-8, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-11338020

RESUMO

Patients with early-stage non-small-cell lung cancer (NSCLC) should be treated with complete surgical resection whenever possible. Incomplete resections do not cure, and the optimal pulmonary resection is anatomic lobectomy. Limited resections (wedge resection and segmentectomy) are associated with a threefold increase in local recurrence, which translates into decreased survival. The addition of mediastinal lymph node dissection produces the best pathologic staging but has never been shown to improve survival. Resections can be performed through a variety of incisions and even using minimally invasive techniques, but posterolateral thoracotomy seems to provide the best exposure and is used most frequently. Adjuvant radiotherapy in both the preoperative and postoperative settings does not improve survival in patients with resected NSCLC. Similarly, postoperative chemotherapy cannot be advocated in these patients based on the current data. Improved survival has been demonstrated in the randomized setting for patients with locally advanced, resectable disease (N2) using preoperative (induction) chemo(radio)therapy, but the numbers are small. Patients with this stage of NSCLC should be enrolled in induction therapy protocols whenever possible to confirm the efficacy of this approach.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/cirurgia , Neoplasias Pulmonares/cirurgia , Pneumonectomia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/mortalidade , Quimioterapia Adjuvante , Humanos , Neoplasias Pulmonares/mortalidade , Excisão de Linfonodo , Estadiamento de Neoplasias , Radioterapia Adjuvante , Cirurgia Torácica Vídeoassistida
9.
Semin Thorac Cardiovasc Surg ; 13(1): 20-6, 2001 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-11309721

RESUMO

The authors review the management of postpneumonectomy bronchopleural fistulae and describe the place of the transsternal transpericardial approach, especially in the management of recalcitrant postpneumonectomy bronchopleural fistulae. The technique is described in detail, and the results of the published series are analyzed. The authors do recommend the use of this approach in the recalcitrant fistula that has failed standard approaches.


Assuntos
Fístula Brônquica/cirurgia , Doenças Pleurais/cirurgia , Fístula do Sistema Respiratório/cirurgia , Procedimentos Cirúrgicos Torácicos , Anastomose Cirúrgica , Fístula Brônquica/etiologia , Humanos , Doenças Pleurais/etiologia , Pneumonectomia/efeitos adversos , Fístula do Sistema Respiratório/etiologia
10.
Chest Surg Clin N Am ; 11(1): 165-88, ix, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-11253596

RESUMO

The management of small-cell lung cancer (SCLC) evolved rapidly through the 1980s, but has stalled since then. The relative roles of surgery and radiotherapy in this former systemic disease have been worked out well. The chemotherapy of SCLC has progressed less rapidly. This article discusses the latest developments in each modality of treatment of SCLC and summarizes current treatment strategies.


Assuntos
Carcinoma de Células Pequenas/terapia , Neoplasias Pulmonares/terapia , Carcinoma de Células Pequenas/imunologia , Terapia Combinada , Humanos , Imunoterapia , Neoplasias Pulmonares/imunologia , Recidiva Local de Neoplasia/terapia , Terapia de Salvação
11.
Ann Surg Oncol ; 8(2): 175-8, 2001 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-11258784

RESUMO

OBJECTIVES: Video-assisted thoracic surgery (VATS) has become an accepted approach for the diagnosis and treatment of thoracic malignancies. Port site tumor recurrence is a reported complication of VATS. However, the true incidence of this problem is unknown. To try to determine the incidence of port site recurrence, we analyzed our experience with patients undergoing VATS wedge resection for malignancy. METHODS: Data were obtained from our prospective VATS database. The analysis was confined to patients undergoing VATS wedge resection for malignancy, excluding those having a pleural biopsy only. Parameters analyzed included demographic factors, surgical technique, and port site recurrences identified by physical examination, CT scan, or both. RESULTS: From 1992 to 1996, 410 patients (182 men, 228 women; median age = 61 years) underwent a VATS wedge resection for malignancy. The procedure was performed for diagnosis or staging in 90% of cases. Access incisions plus port sites were used in 97 (24%) patients; port sites only were used in 313 (76%) patients. Conversion to thoracotomy was necessary in 102 patients (25%) either for definitive resection (58 patients) or because VATS was not technically adequate (44 patients). Specimens were retrieved via access incisions or port sites with or without a specimen bag. The operative mortality was 0.25%. With long-term follow-up (median = 25 months) available for 374 patients (91%), only one port site recurrence was identified (0.26%). CONCLUSION: Our experience confirms the safety of VATS wedge resection in cancer patients. The incidence of port site tumor recurrence is low when oncologic principles are respected. In our institution, these principles include performing VATS wedge resection only for lesions that can be widely removed; converting to thoracotomy for definitive or extensive cancer operation; and using meticulous technique for the extraction of specimens from the pleural space.


Assuntos
Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/cirurgia , Inoculação de Neoplasia , Cirurgia Torácica Vídeoassistida/efeitos adversos , Adulto , Idoso , Idoso de 80 Anos ou mais , Biópsia/métodos , Feminino , Humanos , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias/métodos , Cirurgia Torácica Vídeoassistida/métodos , Toracotomia
12.
Ann Thorac Surg ; 71(3): 967-70, 2001 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-11269482

RESUMO

BACKGROUND: Second lung primaries occur at a rate of 1% to 3% per patient-year after complete resections for non-small cell lung carcinoma (NSCLC). Fluorescence bronchoscopy appears to be a sensitive tool for surveillance of the tracheobronchial tree for early neoplasias. METHODS: Patients who were disease-free after complete resection of a NSCLC were entered into a fluorescence bronchoscopy surveillance program. All suspicious lesions were biopsied along with two areas of normal mucosa to serve as negative controls. RESULTS: A total of 73 fluorescence bronchoscopies were performed after conventional bronchoscopy in 51 patients at a median of 13 months postresection. The majority (46 of 51) of patients had stage I or II NSCLC, whereas 10% (5 of 51) had stage IIIA. Three intraepithelial neoplasias and one invasive carcinoma were identified in 3 of 51 patients (6%), all current or former smokers. Of the four lesions identified, three were in the 20 patients with prior squamous cell carcinomas. No intraepithelial neoplasias were identified by white-light bronchoscopy, whereas two of three were detected by fluorescence examination. The one invasive cancer detected was apparent on both white-light and fluorescence bronchoscopic examinations. CONCLUSIONS: Surveillance with fluorescence bronchoscopy identified lesions in 6% of postoperative NSCLC patients thought to be disease-free. Patients with prior squamous cell carcinomas appear to be a population that may warrant future prospective study of postoperative fluorescence bronchoscopic surveillance.


Assuntos
Broncoscopia/métodos , Carcinoma Pulmonar de Células não Pequenas/diagnóstico , Neoplasias Pulmonares/diagnóstico , Segunda Neoplasia Primária/diagnóstico , Cuidados Pós-Operatórios , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma Pulmonar de Células não Pequenas/cirurgia , Feminino , Fluorescência , Humanos , Neoplasias Pulmonares/cirurgia , Masculino , Pessoa de Meia-Idade , Vigilância da População
13.
Cancer J ; 6(2): 82-7, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-11069224

RESUMO

PURPOSE AND OBJECTIVE: Three-dimensional conformal radiotherapy (3D-CRT) is a mode of high-precision radiotherapy designed to increase the tumor dose and decrease the dose to normal tissues. This study reports the final results of the first two dose levels (70.2 Gy and 75.6 Gy) of a phase I dose-escalation study using 3D-CRT for the treatment of non-small cell lung cancer. PATIENTS AND METHODS: Fifty-two patients were treated with 3D-CRT without chemotherapy. The median age was 67 years (range, 39-82 years). The majority of patients had locally advanced cancer. Tumor was staged as I/II in 10%, IIIA in 40%, and IIIB in 50%. Radiation was delivered in daily fractions of 1.8 Gy, 5 days a week. A radiation dose level was considered complete when 10 patients received the intended dose without unacceptable acute morbidity. Toxicity was scored according to the Radiation Therapy Oncology Group grading scheme. RESULTS: Twenty patients were initially assigned to the 70.2-Gy level; 14 of them received the intended dose. Three patients experienced severe acute toxicity, two with grade 3 (requiring steroids or oxygen) and a third with grade 5 (fatal) acute radiation pneumonitis. Because of the grade 5 pulmonary toxicity, the protocol was modified, and only patients with a calculated risk of normal tissue complication of less than 25% were eligible for dose escalation. Patients who had a normal tissue complication probability (NTCP) of greater than 25% received a lower dose of radiation. An additional 18 patients were entered on the modified study; 11 of them received 70.2 Gy. One patient experienced grade 3 acute pneumonitis. Despite dose reduction in four patients because of an unacceptably high NTCP, two additional patients developed grade 3 pulmonary toxicity. Fourteen patients were accrued to the 75.6-Gy dose level, and 10 received the intended dose. One of the 10 patients experienced grade 3 pulmonary toxicity and one developed grade 3 esophageal toxicity. Three patients were treated to lower doses as a result of their calculated NTCP without toxicity, and one patient refused treatment. The 2-year local control, disease-free survival, and overall survival rates were 37%, 12%, and 24%, respectively. The median survival time was 11 months. DISCUSSION: Treatment to 70.2 Gy and 75.6 Gy using 3D-CRT was delivered with acceptable morbidity when NTCP constraints were observed. Local control was encouraging in these patients with locally advanced disease. Patients are currently being accrued to the 81-Gy level of the study.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/radioterapia , Neoplasias Pulmonares/radioterapia , Radioterapia Conformacional , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma Pulmonar de Células não Pequenas/complicações , Carcinoma Pulmonar de Células não Pequenas/mortalidade , Esôfago/efeitos da radiação , Feminino , Humanos , Neoplasias Pulmonares/complicações , Neoplasias Pulmonares/mortalidade , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Pneumonia/radioterapia , Dosagem Radioterapêutica , Análise de Sobrevida , Tomógrafos Computadorizados
15.
J Thorac Cardiovasc Surg ; 120(4): 790-8, 2000 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11003764

RESUMO

OBJECTIVES: We sought to determine whether early prophylaxis with an L -type calcium channel blocker reduces the incidence and morbidity associated with atrial fibrillation/flutter and supraventricular tachyarrhythmia after major thoracic operations. METHODS: In this randomized, double-blind, placebo-controlled study, 330 patients were given either intravenous diltiazem (n = 167) or placebo (n = 163) immediately after lobectomy (> or =60 years) or pneumonectomy (> or =18 years) and orally thereafter for 14 days. The primary end point with respect to efficacy was a sustained (> or =15 minutes) or clinically significant atrial arrhythmia during treatment. RESULTS: Postoperative atrial arrhythmias (atrial fibrillation/flutter = 60; supraventricular tachyarrhythmias = 5) occurred in 25 (15%) of the 167 patients in the diltiazem group and 40 (25%) of the 163 patients in the placebo group (P = .03). When compared with placebo, diltiazem nearly halved the incidence of clinically significant arrhythmias (17/167 [10%] vs. 31/163 [19%], P = .02). The 2 groups did not differ in the incidence of other major postoperative complications or overall duration or costs of hospitalization. No serious adverse effects caused by diltiazem were seen. CONCLUSIONS: After major thoracic operations, prophylactic diltiazem reduced the incidence of clinically significant atrial arrhythmias in patients considered at high risk for this complication.


Assuntos
Fibrilação Atrial/prevenção & controle , Flutter Atrial/prevenção & controle , Bloqueadores dos Canais de Cálcio/uso terapêutico , Diltiazem/uso terapêutico , Complicações Pós-Operatórias/prevenção & controle , Taquicardia Supraventricular/prevenção & controle , Administração Oral , Idoso , Fibrilação Atrial/epidemiologia , Flutter Atrial/epidemiologia , Método Duplo-Cego , Feminino , Custos Hospitalares , Humanos , Incidência , Injeções Intravenosas , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/epidemiologia , Procedimentos Cirúrgicos Pulmonares , Taquicardia Supraventricular/epidemiologia , Resultado do Tratamento
16.
Ann Thorac Surg ; 69(5): 1542-9, 2000 May.
Artigo em Inglês | MEDLINE | ID: mdl-10881839

RESUMO

BACKGROUND: In patients with unresectable pulmonary metastases from sarcoma, systemic chemotherapy has had limited efficacy possibly because of dose-limiting toxicities. Isolated lung perfusion is an alternative method of delivering high-dose chemotherapy to the lungs while minimizing systemic toxicities. We present the results of our Phase I trial of isolated lung perfusion with doxorubicin hydrochloride in such a group of patients. METHODS: From May 1995 to June 1997, 8 patients with unresectable metastases from sarcoma limited to the lungs underwent isolated lung perfusion with doxorubicin. A dose-escalation schedule starting at 40 mg/m2 was used. Seven patients were treated with a dose of 40 mg/m2 or less, and 1 patient received 80 mg/m2. Blood, tumor, and normal lung samples were obtained at various time points during the operation. Patients were evaluated for cardiac, pulmonary, and other toxicities. RESULTS: The doxorubicin concentrations in both normal lung and tumor correlated directly with the amount of doxorubicin in the perfusate. The tumors took up less doxorubicin than the lung. All patients had minimal or undetectable systemic levels of doxorubicin at the conclusion of the perfusion. There were no cardiac or other systemic toxicities. In the 7 patients perfused with 40 mg/m2 or less of doxorubicin, there was a significant decrease in the forced expiratory volume in 1 second and a trend toward a significant decrease in diffusing capacity. The patient who received 80 mg/m2 underwent lung scanning postoperatively, and scans showed no ventilation or perfusion in the perfused lung. There were no perioperative deaths. Two patients are alive with disease, and 6 patients died of disease. The median follow-up is 11 months and the longest, 31 months. There were no partial or complete responses. One patient had stabilization of disease in the perfused lung, whereas the lesions in the untreated lung progressed markedly. CONCLUSION: Isolated lung perfusion is well tolerated by patients and effectively delivers high doses of doxorubicin to the lung and tumor tissues while minimizing systemic toxicities. A single dose of 80 mg/m2 resulted in substantial injury to the lung. There were no partial or complete responses in patients perfused with doxorubicin at the maximum tolerated dose of 40 mg/m2. Isolated lung perfusion remains a model for testing new and innovative therapies for metastatic sarcoma.


Assuntos
Antineoplásicos/administração & dosagem , Quimioterapia do Câncer por Perfusão Regional , Doxorrubicina/administração & dosagem , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/secundário , Sarcoma/tratamento farmacológico , Sarcoma/secundário , Adulto , Antineoplásicos/farmacocinética , Doxorrubicina/farmacocinética , Feminino , Humanos , Pulmão/efeitos dos fármacos , Masculino , Pessoa de Meia-Idade
17.
J Thorac Cardiovasc Surg ; 119(6): 1147-53, 2000 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10838531

RESUMO

BACKGROUND: The treatment of superior sulcus lung cancers is evolving and preoperative chemotherapy is increasingly used. To establish a historical benchmark against which new therapies can be assessed, we reviewed our 24-year experience with patients undergoing thoracotomy for lung cancers of the superior sulcus. METHODS: Data were acquired through retrospective chart review. Overall survival was calculated by the method of Kaplan and Meier, and prognostic factors were examined by log rank and Cox proportional hazards modeling. RESULTS: From 1974 to 1998, 225 patients underwent thoracotomy. The patients included 144 men (64%) and 81 women with a median age of 55 years. The majority of patients (55%) received preoperative radiation, but 35% did not have any preoperative treatment. Tumor stages were IIB (T3 N0) in 52%, IIIA in 15%, and IIIB in 27% of patients. Complete resection was achieved in 64% of T3 N0 tumors, 54% of T3 N2 tumors, and 39% of T4 N0 tumors. Operative mortality was 4%. Median survival was 33 months for stage IIB and 12 months for both stages IIIA and IIIB. Actuarial 5-year survivals were 46% for stage IIB, 0% for stage IIIA, and 13% for stage IIIB. By univariate and multivariable analyses, T and N status and complete resection had a significant impact on survival. Locoregional disease was the most common form of relapse. CONCLUSIONS: Our results provide a benchmark against which new treatment regimens can be evaluated. Control of locoregional disease remains the major challenge in treating lung cancers of the superior sulcus. The potential benefit of preoperative chemotherapy or chemoradiotherapy must be assessed by whether it leads to higher rates of complete resection and a lower risk of local relapse.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/mortalidade , Carcinoma Pulmonar de Células não Pequenas/cirurgia , Neoplasias Pulmonares/mortalidade , Neoplasias Pulmonares/cirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma Pulmonar de Células não Pequenas/patologia , Feminino , Humanos , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento
18.
Hum Gene Ther ; 11(5): 759-69, 2000 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-10757355

RESUMO

Regional lymph nodes (RLNs) possess important immune functions and represent a major pathway of metastasis for solid tumors. Given these facts, the ability to transfer exogenous genes to the RLNs with the goal of manipulating the local immunological milieu would be desirable. On the basis of the hypothesis that a significant proportion of adenovirus (Ad) gene transfer vectors traffic through the lymphatics, E1-E3- Ad vectors were injected into the hind footpad of C3H/He mice and the RLNs assessed for vector trafficking and transgene expression. A low dose (10(9) particles) of an Ad vector encoding the firefly luciferase gene (Ad-CMV.Luc) resulted in luciferase expression only in the injection site and RLNs, with no detectable systemic (liver, spleen, lung) expression. At a higher dose (10(11) particles), some expression could be detected systemically in addition to the RLNs, but at levels in liver 14-fold less than in the RLNs. Transgene expression in the RLNs was transient, peaking at 1 day, decreasing markedly by 7 days. At high doses (10(11) particles), interruption of draining lymphatics decreased the amount of systemic dissemination 22-fold, suggesting that a large proportion of the vector trafficks through the lymphatics before reaching the systemic circulation. Administration of a vector encoding the jellyfish green fluorescent protein gene (AdCMV.GFP, 10(11) particles) showed that transgene expression in the RLNs was primarily in the cortical area. After footpad injection of a fluorescent-labeled Ad vector (Cy3-AdCMV.Null), fluorescent virions were visualized in the draining lymph. Regional lymph collected from animals injected in the footpad with AdCMV.Luc (10(11) particles) contained functional vector. Augmentation of local immune function in the RLNs was achieved by footpad administration of an Ad vector encoding murine IL-12, resulting in high mIL-12 and IFN-gamma levels in the regional, but not distant, nodes. These data demonstrate that expression of exogenous genes in RLNs is easily accomplished with Ad vectors, Ad vector dissemination occurs primarily via the lymphatics after footpad administration in mice, and basic immune functions in the RLNs can be manipulated by Ad-mediated gene transfer in vivo.


Assuntos
Adenoviridae/genética , Técnicas de Transferência de Genes , Vetores Genéticos/genética , Linfonodos/fisiologia , Animais , Drenagem , Regulação da Expressão Gênica , Vetores Genéticos/administração & dosagem , Interleucina-12/imunologia , Interleucina-12/metabolismo , Luciferases/genética , Luciferases/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C3H , Transgenes
19.
J Thorac Cardiovasc Surg ; 119(3): 420-8, 2000 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10694599

RESUMO

OBJECTIVE: The effectiveness of chest wall resection for locally recurrent breast cancer as cancer treatment remains poorly defined, possibly because of the general impression that locally recurrent disease is a harbinger of rapidly progressive metastatic disease and that extensive surgical treatment in these patients is inappropriate. Reports to date have focused on technical feasibility, not long-term outcome. METHODS: We reviewed our experience with 38 women who underwent chest wall resection for locally recurrent breast cancer between October 1987 and May 1997. Overall survival was calculated by the Kaplan-Meier method and the significance of prognostic variables evaluated by log-rank and Cox regression analyses. RESULTS: The operative mortality rate was 0%. Overall survival at 1, 3, and 5 years after chest wall resection was 74%, 41%, and 18%, respectively, and the proportion of patients free of local recurrence at 1, 3, and 5 years was 59%, 42%, and 13%, respectively. Regional nodal disease and size of largest tumor nodule (>4 cm) were significant predictors of local re-recurrence (P <.01, P =.04); lymph node metastasis was the only predictor of long-term survival (P <.01). Patients with and without synchronous sites of metastatic disease had near-identical 3-year survivals. CONCLUSIONS: Chest wall resection for locally recurrent breast cancer has a low mortality. However, a significant number of patients have the development of local re-recurrence or metastases, and 5-year survival is limited. It is unlikely that complete resection of all locally recurrent disease improves survival. Future studies should focus on the quality of palliation achieved.


Assuntos
Neoplasias da Mama/mortalidade , Neoplasias da Mama/cirurgia , Recidiva Local de Neoplasia/mortalidade , Recidiva Local de Neoplasia/cirurgia , Procedimentos Cirúrgicos Torácicos , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Pessoa de Meia-Idade , Prognóstico , Taxa de Sobrevida
20.
J Thorac Cardiovasc Surg ; 119(3): 429-39, 2000 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10694600

RESUMO

OBJECTIVE: This phase II trial assessed the feasibility, as measured by response rate, toxicity, resectability rate, and surgical morbidity and mortality rates, of perioperative paclitaxel and carboplatin chemotherapy in patients with early-stage non-small cell lung carcinoma. METHODS: All patients required negative mediastinoscopy results and adequate medical parameters to undergo induction chemotherapy and an operation. Superior sulcus patients were excluded. Chemotherapy consisted of paclitaxel 225 mg/m(2) over 3 hours and carboplatin (area under the curve = 6) every 21 days for 2 cycles preoperatively. Three postoperative cycles of chemotherapy were planned for patients undergoing complete resection. RESULTS: Between June 1996 and July 1998, 94 patients were entered into the study. Sixty-five (69%) were men, and the median age was 64 years (range, 34-79 years). After induction chemotherapy, 53 of 94 (56%; 95% confidence interval, 46%-67%) had a major objective response, 88 (94%) underwent surgical exploration, and 81 (86%; 95% confidence interval, 78%-92%) underwent complete resection. Reasons for not undergoing an operation included disease progression (n = 3), clinically unresectable status (n = 1), death (n = 1), and patient lost to follow-up (n = 1). Two postoperative deaths occurred. Six (6%; 95% confidence interval, 0%-13%) pathologic complete responses were observed. Ninety (96%) patients received the planned preoperative chemotherapy versus 45% receiving postoperative chemotherapy. No unexpected chemotherapy or surgical morbidity occurred. The 1-year survival is currently estimated at 85%, and the median survival has not yet been reached. CONCLUSIONS: Induction chemotherapy with paclitaxel and carboplatin is feasible and produces a high response rate with acceptable morbidity and mortality rates in early-stage non-small cell lung carcinoma. A prospective randomized trial comparing 3 cycles of induction chemotherapy and surgery with surgery alone in early-stage non-small cell lung carcinoma is planned.


Assuntos
Antineoplásicos/uso terapêutico , Carboplatina/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Neoplasias Pulmonares/tratamento farmacológico , Paclitaxel/uso terapêutico , Adulto , Idoso , Carcinoma Pulmonar de Células não Pequenas/patologia , Carcinoma Pulmonar de Células não Pequenas/cirurgia , Terapia Combinada , Estudos de Viabilidade , Feminino , Humanos , Neoplasias Pulmonares/patologia , Neoplasias Pulmonares/cirurgia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Cuidados Pós-Operatórios , Cuidados Pré-Operatórios , Estudos Prospectivos
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