Figure 2From: Cerebral air embolism as a complication of peptic ulcer in the gastric tube: case report Postmortem specimen of the gastric tube. a: Autopsy showed an ulcer of 1.5 cm diameter in the middle of the gastric tube. b: Immunostaining with CD34 showed complete loss of endothelial cell structure of the branch of the pulmonary vein beneath the ulcer base of the gastric tube (arrows), indicating perforation of the vessel.Back to article page