Pneumonia in a Snail Cornu aspersum (Gastropoda, Pulmonata)

The larger part of the shell in a garden snail (Cornu aspersum) had been eaten away by mice, thus exposing the lung. This has most probably, affected the main pulmonary blood vessels running over the dorsal surface of the lung. The alveolar walls had atrophied, mimicking alveolar emphysema. Many blood capillaries were open. In consequence blood had floated in the alveolar spaces. Gas exchange was severely hampered. Inflammatory reactions were minimal.