[Colitis cystica profunda in inflammatory psedomembraneous dysentery in pigs]

The authors examined 32 cases of dysentery in pigs at the age of about 16 weeks. From the morphological viewpoints, the lesion was a disease of the large intestine characterized by a pseudomembranous, croupous, or even diphtheric inflammation of the intestine and by a conspicuously small pyogenic component in the inflammatory exudate in propria mucosae. The colon contained glandular intestinal structures, corresponding to the human disease colitis cystica profunda, situated exclusively at the sites of lymphatic folicles. The study of series incisions demonstrated that in the given cases of the dysentery of pigs colitis cystica profunda is the result of the entropium of intestinal mucous membrane into the submucosa. The residues of pressed lymphatic tissue contained multiple Russell's corpuscles of plasmocellulal origin--this is proved by oxyphilla and by the positive finding in the PAS reaction and in the Weigert method of fibrin testing.