Fig. 4From: Pulmonary veno-occlusive disease as a cause of severe pulmonary hypertension in a dogMacroscopic image of the lungs. Macroscopic image of the lungs showing a diffuse mottled appearance with multiple dark red foci of 1 × 1 × 3 mm, and small numbers of white foci of 1 × 1 × 1 mm often surrounded by a dark red zone (demarcation) randomly distributed throughout all lung lobesBack to article page