* Venous obstruction gives rise to congestion, oedema and necrosis of gastric mucosa.[[Category:Stomach_and_Abomasum_-_Pathology]][[Category:Dog]] | * Venous obstruction gives rise to congestion, oedema and necrosis of gastric mucosa.[[Category:Stomach_and_Abomasum_-_Pathology]][[Category:Dog]] |