TY - CHAP M1 - Book, Section TI - Resection of Blebs, Bullae, and Giant Bullae A1 - Sonett, Joshua R. A1 - Bromberger, Bianca A2 - Sugarbaker, David J. A2 - Bueno, Raphael A2 - Burt, Bryan M. A2 - Groth, Shawn S. A2 - Loor, Gabriel A2 - Wolf, Andrea S. A2 - Williams, Marcia A2 - Adams, Ann PY - 2020 T2 - Sugarbaker’s Adult Chest Surgery, 3e AB - The pulmonary bleb is a small subpleural collection of air located within the layers of the visceral pleura. Blebs represent the coalescence of air from small ruptures of terminal alveoli that have dissected through the interstitium to form a small subpleural collection. Such lesions may present symptomatically with a spontaneous pneumothorax. A nontraumatic or iatrogenic pneumothorax in patients without clinically apparent lung disease is termed a “primary spontaneous pneumothorax” (PSP). Although carrying no diagnosis of underlying lung disease, most patients with PSP are found to have multiple subpleural blebs at the time of surgery and smoking has been observed to significantly increase the risk of its development.1,2 Pathologically, bleb formation occurs secondary to mechanical stress from increased intrathoracic pressure in the lung tissue that is predisposed to deformation by weakness of the connective tissue. The lesions that result in spontaneous pneumothorax are located predominantly in the apex of the upper lobe or the apex of the superior segment, where there is increased mechanical stress.3 Surgical therapy thus is oriented to the apex of the lung. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/20 UR - accesssurgery.mhmedical.com/content.aspx?aid=1170412650 ER -