Changes

===Radiography===

===Radiography===

Abdominal radiography without contrast in foals with outflow obsturction typically rveeals very disticnt enlarged, gas-filled stomach.  Liquid barium contrast will either have markedly delayed (with incomplete obstruction) oir no (complete onsbtruction) outflow. (Sanchez)

In foals, abdominal radiography can be used to highlight gastric outflow obstruction.  Liquid barium will demonstrate very delayed or no outflow depending on the degree of obstruction.  Without contrast medium, a large, gas filled stomach will be obvious.<ref name="Sanchez">Sanchez, L.C (2010) 'Diseases Of The Stomach' in Reed, S.M, Bayly, W.M. and Sellon, D.C (2010) '''Equine Internal Medicine''' (Third Edition), Saunders, Chapter 15.</ref>

===Biopsy===

===Biopsy===