JPC SYSTEMIC PATHOLOGY
DIGESTIVE SYSTEM
September 2018
D-M05

Signalment: (JPC#2456580):  Adult castrated male pig

HISTORY:  Clusters of bubbles along a 20 cm length of distal small intestine were present at necropsy.

HISTOPATHOLOGICAL DESCRIPTION:  Small intestine:  Diffusely, lymphatics in the submucosa and tunica serosa are moderately to markedly dilated up to 2 mm in diameter by clear space (edema) and elevate the overlying mucosa.  Multifocally, cystic lymphatics are separated by collagen bundles, which are are expanded and infiltrated by moderate numbers of Langhans and foreign body type multinucleated giant cells, fewer epithelioid macrophages, eosinophils, lymphocytes, plasma cells, hemorrhage, fibrin, and edema which occasionally infiltrate the tunica muscularis and serosa.

MORPHOLOGIC DIAGNOSIS: Small intestine:  Emphysema, submucosal and intralymphatic, diffuse, marked, with multifocal granulomatous and eosinophilic lymphangitis, breed not specified, porcine.

CONDITION:  Emphysema intestinalis; intestinal emphysema; pneumatosis cystoides intestinalis; pneumotosis cystica of the intestine

CAUSE:  Unknown

GENERAL DISCUSSION:

PATHOGENESIS:

TYPICAL CLINICAL FINDINGS:  

TYPICAL GROSS FINDINGS:

TYPICAL MICROSCOPIC FINDINGS:

ADDITIONAL DIAGNOSTIC TESTS:  

DIFFERENTIAL DIAGNOSIS:

COMPARATIVE PATHOLOGY:

REFERENCES:

  1. Gelberg HB. Alimentary system and the peritoneum, omentum, mesentery, and peritoneal cavity. In: Zachary JF, ed. Pathologic Basis of Veterinary Disease. 6th ed. St. Louis, MO: Elsevier; 2017:405.
  2. Uzal FA, Plattner BL, Hostetter JM. Alimentary system. In: Maxie MG, ed. Jubb, Kennedy and Palmer’s Pathology of Domestic Animals. Vol 2. 6th ed. Philadelphia, PA: Elsevier Saunders; 2016:87.


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