الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Positron emission tomography (PET) imaging is based on biochemical processes that may offer better detection of tumors even before they become anatomically apparent. Integration of functional PET data with the anatomical information of computed tomography (PET-CT) has markedly increased the sensitivity, specificity and accuracy of discrimination between benign and malignant diseases.The18F-fluoro deoxy glucose positron emission tomography (FDG-PET) permits whole-body imaging in a non-invasive way.Lung cancer is one of the most common types of cancer in both men and women. Small cell lung cancer (SCLC) represents 15% to 25% of all lung cancers and occurs almost exclusively in smokers. Non-small cell lung cancer (NSCLC) is the leading cause of cancer death in both men and women. Patients with stage I or II NSCLC may be cured by surgery, whereas those with stage IIIA or IIIB are considered inoperable. FDG-PET has the potential to avoid unnecessary surgery in patients with advanced NSCLC.Aim of Work:The essay aims to studythe value of PET scan in the management of lung cancer as regard initial staging , differentiation between primary and metastatic lung cancer and selection of patients for proper management.Conclusion:The accurate staging of lung cancer is an important factor in determining optimal patient treatment. Although various imaging methods can be used for staging, PET/CT has proven to be the best through the integration of both anatomic and physiologic data.