Overview
The American College of Chest Physicians (ACCP) chose the Duke University Center for Clinical Health Policy Research to perform formal systematic reviews of the current evidence in the five new non-small cell lung cancer (NSCLC) topic areas, as well as to provide a search for the existing guidelines, systematic reviews, and meta-analyses in all of the topics areas. In addition, the Agency for Healthcare Quality and Research) AHRQ agreed to fund the BlueCross BlueShield Association Technology Evaluation Center to perform the formal systematic review of literature on small cell lung cancer (SCLC). The Health Outcomes Research Group of the Department of Epidemiology and Biostatistics at Memorial Sloan-Kettering Cancer Center conducted a full-scale review of the literature since the first set of guidelines in the area of screening for lung cancer to assist that particular writing group.
The formal systematic reviews of the five new topic areas were guided by the appropriate chapter editors and their writing committees, in concert with the Executive Committee of the panel.
The two EPC research teams conducted a variety of systematic computerized bibliographic database searches including the following: (1) a search for systematic reviews, guidelines, and meta-analyses published since the last ACCP lung cancer guideline (MEDLINE, The Cochrane Library, National Guidelines Clearinghouse); (2) targeted searches for reviews in each of five selected treatment sections (solitary pulmonary nodules, stage I and II, stage IIIA, stage IIIB, stage IV); these searches, run in OVID version of MEDLINE, were performed in July and August 2005 and were limited to publication years since 1995, English language, and human subjects; and (3) searches related to SCLC are described in the evidence chapter on SCLC.
Search terms included the medical subject heading terms lung neoplasms (exploded) and bronchial neoplasms for the lung cancer concept. Each topic search utilized key words specific to the key questions of interest (complete search strategies are available on request from the authors).
Strategy Specific for the Treatment of Non-small Cell Lung Cancer Stage I and Stage II
The Duke Evidence-based Clinical Practice Center searched the literature for studies regarding the issues of lymph node staging vs. dissection, surgical treatment of early stage lung cancer, the use of adjuvant chemotherapy in the treatment of early stage lung cancer, and the use of radiation therapy for primary treatment of early stage lung cancer as well as in the adjuvant setting. The Duke Evidence-based Practice Center found insufficient data were available regarding ablative therapies such as radiofrequency ablation, cryotherapy, and ablation of tumors using microwave emitting probes, and these areas were not included in this evidence-based review. They then provided evidence tables, summaries of studies, and references to other recently published guidelines authored by other organizations for the panel members to review.