- This treatment acts by exciting considerable inflammation, which has the effect of causing swelling, and thus frequently closing the hernial opening and preventing the contents of the sac from returning. - "Special Report on Diseases of Cattle", U.S. Department of Agriculture J.R. Mohler.
- This swelling can generally be made to disappear by pressure, and when it has been reduced one can easily recognize the direction and extent of the hernial opening. - "Special Report on Diseases of Cattle", U.S. Department of Agriculture J.R. Mohler.
- This pouch is described as a pressure or pulsion diverticulum because the hernial protrusion is ascribed to increased pressure within the pharynx, not only the normal increase caused by the act of swallowing, but an abnormal pressure from the too rapid swallowing or bolting of imperfectly masticated food materials. - "Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition.", Alexander Miles Alexis Thomson.