The cut surface of this lung demonstrates the typical appearance of a bronchopneumonia with areas of tan-yellow consolidation. Remaining lung is dark red because of marked pulmonary congestion. Bronchopneumonia (lobular pneumonia) is characterized by patchy areas of pulmonary consolidation. These areas become almost confluent in the left lower lobe on the bottom left of the photograph.The areas of consolidation are firmer than the surrounding lung.