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PET-CT improves care of limited-stage small-cell lung cancer patients

DENVER Each year, 13 percent of all newly diagnosed lung cancer patients are diagnosed with small-cell lung cancer (SCLC). Approximately 39 percent of patients with SCLC are diagnosed with limited-stage disease, meaning the cancer is only present in one lung, but may have spread to lymph nodes or tissue between the lungs. These patients are often treated with chemotherapy and definitive radiation therapy. Staging information is essential because of the high propensity for metastatic disease in SCLC, and the identification of metastases can spare patients from the toxicity associated with thoracic radiotherapy. Furthermore, in those patients who do receive radiotherapy, knowing the exact extent of disease may permit more accurate treatment volume delineation.

Until 2011, the National Comprehensive Cancer Network (NCCN) recommended a bone scan as part of the initial evaluation of all newly diagnosed SCLC patients. However, in 2012, the NCCN began recommending positron emission tomography computed tomography (PET-CT) in lieu of bone scan. Researchers from the University of Pennsylvania wanted to know the clinical impact of using PET instead.

A study published in the July issue of the Journal of Thoracic Oncology (JTO), concludes that PET-CT improves staging accuracy and intrathoracic disease identification, which translates into an improvement in clinical outcome in these patients.

"Pretreatment PET staging of LS-SCLC was associated with improved survival," the authors report. "PET-staged patients had an improved 3-year overall survival from diagnosis (47 percent versus 19 percent; p-.03) compared with those with LS-SCLC who were not staged with PET." The lead author of this work is Dr. Eric Xanthopoulos. IASLC co-authors include Dr. Corey Langer, Dr. Charles Simone and Dr. Ramesh Rengan.


Contact: Kristal Griffith
International Association for the Study of Lung Cancer

Page: 1

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