Lung hernia (Sibson hernia) is a protrusion of lung outside of thoracic wall. In 20% patients with lung hernia, the incidence is congenital. In 80% of the cases, the hernia is noted after chest trauma, thoracic surgery or certain pulmonary diseases. By: https://www.instagram.com/tv/CgwJMO4ltRC/?igshid=YmMyMTA2M2Y=