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Management of the Clinically Node-Negative Axilla: What Have We Learned From the Clinical Trials?Here we review the evolution of sentinel lymph node biopsy for the management of clinically node-negative breast cancer, and we address the current controversies and management issues.
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Management of Anal Cancer in the HIV-Positive PopulationSquamous cell anal cancer remains an uncommon entity; however,the incidence appears to be increasing in at-risk populations, especiallythose infected with human papillomavirus (HPV) and human immunodeficiencyvirus (HIV). Given the ability to cure this cancer using synchronouschemoradiotherapy, management practices of this disease arecritical. This article considers treatment strategies for HIV-positive patientswith anal cancer, including the impact on chemoradiation-inducedtoxicities and the role of highly active antiretroviral therapy in the treatmentof this patient population. The standard treatment has beenfluorouracil (5-FU) and mitomycin (or cisplatin) as chemotherapy agentsplus radiation. Consideration to modifying the standard treatment regimeis based on the fact that patients with HIV tend to experience greatertoxicity, especially when CD4 counts are below 200; these patients alsorequire longer treatment breaks. Additional changes to the chemotherapydosing, such as giving 5-FU continuously and decreasing mitomycin dose,are evaluated and considered in relation to radiation field sizes in an effortto reduce toxicity, maintain local tumor control, and limit need forcolostomy. The opportunity for decreasing the radiation field size andusing intensity-modulated radiation therapy (IMRT) is also considered,particularly in light of the fact that IMRT provides dose-sparing whilemaximizing target volume dose to involved areas. The impact of the immunesystem in patients with HIV and squamous cell carcinoma of theanus and the associated response to therapy remains unknown. Continuedstudies and phase III trials will be needed to test new treatment strategiesin HIV-infected patients with squamous cell cancer of the anus todetermine which treatment protocols provide the greatest benefits.
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About This Treatment GuideThe Oncology Group, a division of CMPMedica, publisher of the journal ONCOLOGY and the news magazine Oncology News International, as well as the comprehensive cancer website, cancernetwork.com, is pleased to bring you the 10th annual edition of Cancer Management: A Multidisciplinary Approach.
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The Challenge of Palliating Pancreatic CancerFDA approval of palliative chemotherapy is largely based on disease-free and overall survival, quality of life, and symptom reduction; the latter should be routinely measured by the treating oncologist. Physician assessments of symptoms underreport symptom severity compared to patient-reported symptom assessments.
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Transplant Registries: Guiding Clinical Decisions and Improving OutcomesAbout 50,000 hematopoietic stem cell transplantations are performed yearly, primarily for malignancies. Use of this therapy increased dramatically over the past 30 years due to its proven and potential efficacy in diverse
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Commentary (Thomas/Greco): Myalgias and Arthralgias Associated With PaclitaxelDespite nearly a decade of paclitaxel’scommercial availability,the best strategy formanaging several paclitaxel-relatedtoxicities including myalgia/arthralgiaremains to be elucidated. Mostavailable data in the treatment of myalgia/arthralgia have been anecdotal,reported in the form of case studiesor within the toxicity results of publishedpaclitaxel-containing clinicaltrials. Garrison et al have provided awell-written review summarizingwhat is currently known about theincidence and management of thisquality-of-life–impacting toxicity.
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HER2-Directed Treatment of Metastatic Breast Cancer: Unanswered QuestionsAs more drugs become available in the HER2 arena, clinicians will be faced with increasing challenges regarding which sequences and combinations of drugs will be the best for their patients. In the era in which we practice, a great deal of this is likely to be dictated by the payers.
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End Results of Salvage Therapy After Failure of Breast-Conservation SurgeryLannin and Haffty provide aninteresting and informative reviewon the management andclinical course of an ipsilateral breasttumor recurrence (IBTR) followinglumpectomy and breast irradiation forprimary breast cancer. They presentan engaging discussion concerningthe distinction of a true recurrencefrom a new primary tumor within theipsilateral breast. Although bothevents are included in the term IBTR,the authors point out that the morefavorable outcome follows treatmentof a new primary as opposed to a truerecurrence. Presumably, the true recurrencewould indicate tumor thathas not been eradicated by surgeryand radiotherapy (with or without systemictherapy), which would be amore aggressive malignancy. Thebetter prognosis for a new primarynotwithstanding, there is still a lackof data to indicate whether treatmentshould be different for these twoentities.
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Van Nuys Experience Contradicts NSABP B-17 FindingsIn the May, 1997, issue of Oncology News International , the updated eight-year results of NSABP protocol B-17 were reported as presented by Dr. Bernard Fisher in Paris. B-17 randomized patients with ductal carcinoma in situ (DCIS) into two groups: One group received excision only, the other excision plus postoperative radiation therapy.
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Surgical Treatment of Metastatic Pulmonary Soft-Tissue SarcomaThe lung is the most frequent site of metastasis from soft-tissue sarcomas. Due to the relative resistance of sarcoma to either chemotherapy or radiotherapy, compared to other solid tumors, surgical management of
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Commentary (Sendowski/Segal): Management of Health-Care–Associated Infections in the Oncology PatientInfections are major causes of morbidityand mortality in patientswith cancer. In certain instances,the malignancy itself can predisposepatients to severe or recurrent infections.For example, acute leukemiamay cause neutropenia and ensuingbacterial or fungal infection. Hypogammaglobulinemiaof chroniclymphocytic leukemia may be complicatedby infections due to encapsulatedbacteria. Patients withHodgkin’s lymphoma may sufferfrom recurrent varicella-zoster infections.Solid tumors may obstruct thelumens of respiratory, digestive, andurinary tracts, leading to bacterial infections.Nevertheless, the principalrisk of infectious complications is relatedto the intensity and duration ofimmunosuppressive chemotherapy.Patients with cancer constitute ahighly varied population, both interms of the underlying malignancyand in terms of their immunosuppression.In addition, a single patientmay have multiple predisposing factors,thus increasing the spectrum oflikely pathogens. When evaluating apatient with cancer for a possible infection,it is essential to develop aconceptual framework of quantitativeand qualitative immune defectsthe patient is likely to have, and thento stratify the risk for specific pathogensin the context of the history,physical exam, and laboratorydata.[1]
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Screening for Ovarian Cancer: What We Know, What We Need to KnowThe majority of women with ovarian cancer present with advanced-stage disease. Women with early-stage ovarian cancer have a much better chance of achieving a cure than do women with late-stage disease. This
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A Newly Discovered Liver Mass in a 65-Year-Old WomanA 65-year-old woman with rheumatoid arthritis and autoimmune hepatitis presented to clinic for evaluation of a liver mass. Six months prior to presentation, workup was initiated for elevated liver enzyme levels.
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COUNTERPOINT: Surgical Management of Lymph Node Basin in Sentinel Lymph Node–Positive MelanomaIronically, the patients who can benefit the most from CLND in terms of regional nodal basin disease control are the patients who are least likely to experience a survival benefit.
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Mantle Cell Lymphoma: Clinicopathologic Features and TreatmentsMantle cell lymphoma (MCL) accounts for approximately 6% of non-Hodgkin’s lymphomas. Patients usually present with advanced disease, with a tendency for extranodal involvement. MCL is an aggressive lymphoma with moderate chemosensitivity, but it remains one of the most difficult therapeutic challenges. Complete response rates to chemotherapy range from 20% to 40%, with median survivals of 2½ to 3 years. Anthracycline-containing regimens do not prolong survival compared with nonanthracycline regimens. Single-agent rituximab (Rituxan) has produced response rates of about 30%, and when combined with an anthracycline-containing regimen, response rates increase to above 90%; however, an impact on survival has not yet been demonstrated. More intensive regimens such as hyperCVAD (hyperfractionated cyclophosphamide [Cytoxan, Neosar], vincristine, doxorubicin [Adriamycin], dexamethasone, methotrexate, cytarabine) with either stem cell transplant or rituximab have been associated with promising results.
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Salvage Therapy for Ovarian CancerAs Drs. Sabbatini and Spriggs point out in their review, the majority of ovarian cancer patients continue to present with advanced-stage disease, and only a minority are cured after primary surgery and chemotherapy. At present, recurrent disease is best viewed as a chronic illness that requires ongoing management. A number of therapeutic options are available, but opportunities for cure remain limited. My comments will focus on post-remission therapy, small-volume residual disease, intraperitoneal therapy, secondary cytoreductive surgery, choice of second-line chemotherapy, and participation in phase II studies.
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Leveraging Surgical Oncology to Treat Gastrointestinal Cancers“The pendulum is moving fast towards giving chemotherapy prior to surgery, and the research is going on to continue that trend.”
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Commentary (Danso, Seidman): Trastuzumab in Breast CancerThe clinical development of trastuzumab(Herceptin) for thetreatment of HER2-overexpressingbreast cancer has been perhapsthe most important recentadvance in the management of metastaticbreast cancer. In their rigorousand comprehensive review, Emensand Davidson highlight the importanttrials that resulted in the US Food andDrug Administration (FDA) approvalof trastuzumab, discuss combinationchemotherapy options with trastuzumab,and preview promising futurestrategies for combining trastuzumabwith other targeted biologic agents.
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Where Expert Opinion Meets Public ResistanceThere is concern and growing evidence that the supply of medical oncologists in the United States will be insufficient to meet the needs of future patients. With an aging population and increasing complexity of cancer therapies, it is clear there will be more patients and that they will live longer and require expert care. It is equally clear that the number of specialists trained in cancer medicine is not growing fast enough to meet projected needs, so new models of care will need to be designed and implemented. Innovation in practice models will require the integration of non-physician practitioners (nurse practitioners and physician assistants) into multidisciplinary teams, broader use of technology to allow virtual consultations and the secure exchange of vital health information, increased utilization of community services, and public acceptance.
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Oncocytic Neoplasm on Renal Mass Biopsy: A Diagnostic ConundrumA 56-year-old man presented with a 4.5-cm leftsided renal mass incidentally discovered on an ultrasound performed for workup of lupus nephritis. On dedicated contrast-enhanced magnetic resonance imaging (MRI), the tumor was found to be avidly enhancing.
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Does Evidence-Based Medicine Really Reduce Costs?Emerging as one of the many pieces to the puzzle is the adoption of pathways based on evidence-based medicine (EBM). It has long been theorized that the use of standardized care models not only improves the quality of care, but also reduces costs and makes costs more predictable.
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An Odd But Synergistic Couple: Immunotherapy Combined With RadiotherapyRadiation therapy (RT) and immunotherapy of cancer both date back more than 100 years, and yet, because radiation was often considered immunosuppressive, there had been little enthusiasm for combining them until recently. Immunotherapy has an established role in the treatment of some cancers-superficial bladder cancer treated with bacillus Calmette-Guérin (BCG), renal cell carcinoma and melanoma treated with interferon and interluekin (IL)-2 (Proleukin), and breast cancer and lymphoma treated with monoclonal antibodies such as trastuzumab (Herceptin) and rituximab (Rituxan), which partly function through antibody-dependent cellular cytotoxicity.
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Commentary (Papagikos/Lee): Permanent Prostate BrachytherapyPermanent prostate brachytherapy with or without supplemental therapies is a highly effective treatment for clinically localized prostate cancer, with biochemical outcomes and morbidity profiles comparing favorably with competing local modalities. However, the absence of prospective randomized brachytherapy trials evaluating the role of supplemental external-beam radiation therapy (XRT) has precluded the development of evidence-based treatment algorithms for the appropriate inclusion of such treatment. Some groups advocate supplemental XRT for all patients, but the usefulness of this technology remains largely unproven and has been questioned by recent reports of favorable biochemical outcomes following brachytherapy used alone in patients at higher risk. Given that brachytherapy can be used at high intraprostatic doses and can obtain generous periprostatic treatment margins, the use of supplemental XRT may be relegated to patients with a high risk of seminal vesicle and/or pelvic lymph node involvement. Although morbidity following brachytherapy has been acceptable, supplemental XRT has shown an adverse impact on long-term quality of life. The completion of ongoing prospective randomized trials will help define the role of XRT as a supplement to permanent prostate brachytherapy.
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The Role, Timing, and Clinical Use of ADT in Prostate CancerThe role, timing, and clinical use of androgen deprivation therapy (ADT) in prostate cancer remain a controversial topic for clinicians. Drs. Fang, Merrick, and Wallner provide a compelling review of the clinical benefits and side effects of ADT in high-risk prostate cancer. The number of patients presenting with advanced disease remains significant despite the stage migration of prostate cancer during the PSA (prostate-specific antigen) era.
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Combination Controversies: Checkpoint Inhibition Alone or in Combination for the Treatment of Melanoma?In this review, we highlight prospective data on checkpoint inhibition alone and in combination, discuss data regarding the efficacy and toxicity of combination therapy, and identify clinical scenarios that may favor treatment with combination therapy.
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Treatment of Multiple Myeloma: Finding the Right CombinationIn the past, multiple myeloma was a disease with grim prospects for survival, and few therapeutic options. Today we have a multitude of options, and the armamentarium will continue to expand.
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Progress and Prospects in Vaccine Therapy for Gynecologic CancersTherapeutic and prophylactic vaccines that harness the potential of the immune system against a number of gynecologic cancers are now being developed. The therapeutic vaccines coerce the cellular components of the
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Social Media for OncologistsIn this interview we discuss the dissemination of research results, clinical trials, and other oncology news using social media, as well as what type of media oncologists use, and how useful and relevant this type of information is for most oncologists.
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The Current Clinical Value of the DCIS ScoreThe DCIS Score provides clinically relevant information about personal risk that can guide patient discussions and facilitate shared decision making.
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Pegylated Liposomal Doxorubicin: Antitumor Activity in Epithelial Ovarian Cancer or Cancers of Peritoneal OriginAfter pegylated liposomal doxorubicin (PEG-LD) (Doxil) was shown to be active in ovarian tumors, several trials were developed at the University of Southern California to determine its safety and efficacy in a variety of gynecologic and peritoneal malignancies. Completed phase I and phase II trials have found PEG-LD to be safe and effective in the treatment of platinum- and paclitaxel-refractory epithelial ovarian carcinoma. A new phase II trial is currently underway in similarly refractory patients with ovarian and other related cancers and various degrees of pretreatment. In addition, the efficacy of PEG-LD is being explored in combination with paclitaxel (Taxol), with cisplatin, and with hyperthermia. [ONCOLOGY 11(Suppl 11):38-44, 1997]
