Persistent Right Aortic Arch/ Megaesophagus in a dog

Persistent Right Aortic Arch/ Megaesophagus in a dog
History:  An 8 week old female German Shepherd with vomiting and anorexia for the past 4 weeks. 
Gross Findings: 
The aorta was present on the right side of the trachea and esophagus.  There was a 1 cm long thick white band connecting the aorta and the pulmonary artery which was present on [...]

Ventricular Septal Defect in a foal

Ventricular Septal Defect in a foal
 
History: A 1 day old  foal had been unable to stand or nurse,  had contracted tendons (more severe in left forelimb),  and had been unable to sit sternal.  The foal also had parrot mouth.
Gross Findings:
The right ventricle of the heart was dilated and thickened. The right ventricular free wall measured 1 cm [...]

Aplasia of the Major Duodenal Papilla in a Feline

 
Aplasia of the Major Duodenal Papilla or Bile Duct Atresia in a feline kitten
History: A 2 month old kitten died acutely with no previous clinical signs. FIV and FeLV tests were negative.
Gross Lesions: The kitten was very thin with little muscle mass or body fat stores. The gall bladder was markedly enlarged and [...]