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The Thoracic Surgery and Thoracic Oncology groups of the Spanish Society of Pulmonology and Thoracic Surgery (SEPAR) have backed the publication of a handbook on recommendations for the diagnosis and treatment of non-small cell lung cancer. Due to the high incidence and mortality of this disease, the best scientific evidence must be constantly updated and made available for consultation by healthcare professionals. To draw up these recommendations, we called on a wide-ranging group of experts from the different specialties, who have prepared a comprehensive review, divided into 4 main sections. The first addresses disease prevention and screening, including risk factors, the role of smoking cessation, and screening programs for early diagnosis. The second section analyzes clinical presentation, imaging studies, and surgical risk, including cardiological risk and the evaluation of respiratory function. The third section addresses cytohistological confirmation and staging studies, and scrutinizes the TNM and histological classifications, non-invasive and minimally invasive sampling methods, and surgical techniques for diagnosis and staging. The fourth and final section looks at different therapeutic aspects, such as the role of surgery, chemotherapy, radiation therapy, a multidisciplinary approach according to disease stage, and other specifically targeted treatments, concluding with recommendations on the follow-up of lung cancer patients and surgical and endoscopic palliative interventions in advanced stages.

Mediastinitis is defined as acute or chronic inflammation of the mediastinal structures and generally has a low incidence. The most frequent acute cause is sternotomy following cardiac revascularization surgery with both internal mammary arteries, with an incidence of 0.4% to 5% and a mortality of 16.5% to 47%. The most frequent vector is Staphylococcus aureus. Esophageal perforation, usually iatrogenic, is the second most frequent cause of acute mediastinitis, produced by common oropharyngeal flora, with a mortality rate of 20% to 60%, depending on the time of diagnosis. The third most frequent cause is descending necrotizing mediastinitis, the origin being an odontogenous focus in 60% and beta-hemolytic streptococcus the causative agent in 71.5% of cases. The most accurate diagnostic imaging technique is computed tomography. Treatment is almost always surgical and survival depends on its early performance. The worst postsurgical prognostic factor is septic shock.

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