TY - CHAP M1 - Book, Section TI - Mediastinitis A1 - Doherty, Gerard M. Y1 - 2010 N1 - T2 - Quick Answers Surgery AB - • 4 sources1. Direct contamination2. Hematogenous/lymphatic spread (granulomatous)3. Extension of infection from neck/retroperitoneum4. Extension from lung/pleura• Empyema loculates to form paramediastinal abscess; true mediastinal involvement uncommon• Mediastinitis often involves pleura• Esophageal perforation is most common form of direct contamination (90% of cases)• Secondary causes include: -Oral surgery-Trauma to pharynx-Tracheostomy-Mediastinoscopy-Thyroidectomy• Pneumothorax after upper endoscopy indicates esophageal perforation SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/04/16 UR - accesssurgery.mhmedical.com/content.aspx?aid=58094488 ER -