Polioencephalomalacia

Polioencephalomalacia (PEM) literally means softening of the cerebrocortical grey matter distributed in a laminar (layered) pattern. It is also called cerebrocortical necrosis (CCN), laminar cortical necrosis or cortical necrosis. PEM is a sporadic disease caused by the overconsumption of simple carbohydrates, and the underconsumption of fiber; it occurs in cattle, sheep and goats, and was first seen in the 19th century when ruminants were fed the byproducts of sugar refining. Today PEM is most commonly seen in cattle at 6–18 months of age when fed concentrate rations. Sheep are usually affected at 2–7 months of age.

单词	Cerebrocortical necrosis
释义	Cerebrocortical necrosis 英语百科 Polioencephalomalacia Polioencephalomalacia (PEM) literally means softening of the cerebrocortical grey matter distributed in a laminar (layered) pattern. It is also called cerebrocortical necrosis (CCN), laminar cortical necrosis or cortical necrosis. PEM is a sporadic disease caused by the overconsumption of simple carbohydrates, and the underconsumption of fiber; it occurs in cattle, sheep and goats, and was first seen in the 19th century when ruminants were fed the byproducts of sugar refining. Today PEM is most commonly seen in cattle at 6–18 months of age when fed concentrate rations. Sheep are usually affected at 2–7 months of age.
随便看	mitral P wave mitral reflux mitral regurgitant flow mitral regurgitant volume Mitral regurgitation mitral ring mitral second sound mitral second sound,marked dullness mitral sounds mitral stenoinsufficiency Mitral Stenoses mitral stenosis mitral stenosis associated with mitral insufficiency mitral stenosis,congenital mitral stenosis valvulatom mitral stenosis valvuliotome mitral stricture mitral systolic murmur mitral third sound,absolute dullness mitral type mitral vaive disease mitral valve mitral valve apparatus mitral valve area mitral valve atresia

Cerebrocortical necrosis

Polioencephalomalacia