“…In contrast to spontaneous pneumothorax in humans, a causative pathology is commonly found in dogs with spontaneous pneumothorax ( Holtsinger and Ellison, 1995 ). Bullae or blebs, as well as pulmonary abscesses, plant migration, bacterial or fungal pneumonia, angiostrongylus vasorum infection, heart worm infection, or neoplasia have been reported in this context ( Busch and Noxon, 1992 ; Puerto et al , 2002 ; Lipscomb et al , 2003 ; Au et al , 2006 ; Oliveira et al , 2010 ; Gallagher et al , 2012 ; Boudreau et al , 2013 ; Spodsberg et al , 2013 ; Trempala and Herold, 2013 ). Depending on the underlying disease, complete or partial lung lobectomy is performed and early surgical treatment has been reported to improve survival rate ( Puerto et al , 2002 ).…”