Table 5.
Necropsy and histopathology findings for horses in Group 1, NSF = no significant findings.
| Horse | Skin | Brain and Pituitary Gland | Heart | Lungs, Trachea | GI Tract * | Liver | Kidneys | Spleen |
|---|---|---|---|---|---|---|---|---|
| 424 | NSF | Pituitary cyst | NSF | NSF | Muscular hypertrophy of ileum, few cyathostomes | Mild periportal infiltrate | NSF | NSF |
| 425 | NSF | NSF | NSF | NSF | NSF | Mild periportal infiltrate | Mild interstitial nephritis | NSF |
| 426 | Muzzle papilloma | NSF | NSF | NSF | Encysted cyathostomes | Mild periportal infiltrate | Mild interstitial nephritis | NSF |
| 427 | Sarcoma/ sarcoid | NSF | NSF | Focal histiocytic infiltrate | Gastric bots | Mild periportal infiltrate | NSF | NSF |
| 429 | NSF | NSF | NSF | Multifocal pleural fibrosis | Mesenteric lipoma | NSF | NSF | NSF |
| 431 | Scar, right hock | NSF | NSF | NSF | Gastric bots | Mild periportal infiltrate | Mild interstitial nephritis | NSF |
* All horses exhibited mild lymphoplasmacytic and eosinophilic infiltrates within the lamina propria of the small intestine and colon, with few areas of increased eosinophilic infiltrate. This finding was considered within the normal limits for adult horses with mild intestinal parasitism.