Seminars in oncology
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Seminars in oncology · Jun 2000
Issues in assessing and interpreting quality of life in patients with malignant glioma.
Although primary brain tumors are relatively uncommon types of adult cancer, their location and resistance to treatment can significantly affect the patient's physical and cognitive function. Consequently, quality of life (QOL) issues are extremely important in the design and evaluation of clinical trials of high-grade glioma treatment. ⋯ Recent attempts to better evaluate QOL in brain tumor patients have led to the development of brain tumor-specific QOL instruments, such as the European Organization for Research and Treatment of Cancer's Quality of Life Questionnaire-Brain Cancer Module and the Functional Assessment of Cancer Therapy-Brain, which offer more insight into the QOL aspects of cancer and its treatment. Instruments such as quality time without symptoms or toxicity (Q-TWiST) provide a means of integrating both quality of time of survival and absence of symptoms or toxicity.
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Malignant gliomas are a heterogeneous group of tumors that are associated with significant morbidity and mortality. The development of the malignant phenotype is the result of a complex series of events that influence gene expression, angiogenesis, and invasion and favor the growth of tumor cells. ⋯ However, there is no satisfactory regimen available for adjuvant or salvage chemotherapy for these neoplasms. An overview of the biologic mechanisms, grading systems, and treatment options for anaplastic astrocytoma and glioblastoma multiforme is presented.
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Neurologic complications of cancer and its therapy are varied and common, but there are few true neurologic emergencies. However, when a neurologic emergency does occur, rapid diagnosis and treatment can preserve neurologic function and, in some circumstances, save a life. Epidural spinal cord compression, raised intracranial pressure (ICP), status epilepticus, and intracerebral hemorrhage (ICH) are the most common neurologic emergencies in the cancer patient. This chapter details the clinical features, possible etiologies, diagnostic tests, and treatment options for each of these complications.
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Seminars in oncology · Apr 2000
ReviewDocetaxel (Taxotere) in combination with anthracyclines in the treatment of breast cancer.
Considering the single-agent activity of docetaxel (Taxotere; Rhône-Poulenc Rorer, Antony, France) and doxorubicin in breast cancer and their potential non-cross-resistance, several docetaxel/anthracycline-based combination chemotherapies were developed in phase I and II programs for metastatic breast cancer patients. The rationale for these combinations was also reinforced by the fact that docetaxel showed significant activity in phase III trials in patients previously exposed or having failed anthracycline chemotherapy. In a pivotal randomized phase III study of doxorubicin plus docetaxel versus doxorubicin plus cyclophosphamide as first-line chemotherapy for 429 patients with metastatic breast cancer, doxorubicin/docetaxel emerged as the more effective regimen. ⋯ However, there were no septic deaths among 213 patients receiving doxorubicin/ docetaxel. Extrahematologic toxicity appeared mild for both regimens and the combination docetaxel/doxorubicin did not increase the cardiac toxicity expected for an anthracycline-containing regimen. Docetaxel plus doxorubicin is the first regimen, involving a newly developed agent, proven superior to a standard anthracycline-containing combination in metastatic breast cancer and its potential is now being investigated in the adjuvant setting.
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Seminars in oncology · Apr 2000
ReviewDocetaxel (Taxotere) as a single agent and in combination chemotherapy for the treatment of patients with advanced non-small cell lung cancer.
Docetaxel (Taxotere; Rhône-Poulenc Rorer, Antony, France) has high and reproducible single-agent activity in non-small cell lung cancer, inducing responses in nearly one third of patients treated first-line. As a second-line treatment, docetaxel is the only agent so far shown in randomized trials to prolong survival when compared with either vinorelbine or ifosfamide or best supportive care. When docetaxel is given on a weekly rather than once every 3 week schedule, the risk of neutropenia is reduced while activity appears to be maintained. ⋯ A phase II study of 51 patients treated with the combination of 100 mg/m2 docetaxel and 900 mg/m2 gemcitabine reported a 13-month median survival. In a randomized phase II trial comparing docetaxel/gemcitabine with docetaxel/cisplatin, the two regimens had comparable efficacy and toxicity. Response rates of up to 50% have been reported using docetaxel in conjunction with vinorelbine.