Histology of processed meats

Just for fun I made a slide of a hot dog. I got the idea from one of the senior pathologists here- he fooled us by slipping it into a set of unknowns from a weekly slide conference.
Then later I found a piece of pepperoni in the stomach of a dog and I wondered [...]

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 [...]

Salt Toxicity in a group of Pigs

Submitted by B. Bawa
History: Four approximately 10 weeks old piglets were presented for necropsy on 06/13/08. The pigs were found with seizures and paddling. There were 27 pigs per pen and most normal and 4 down. The pigs would dog sit, head back, chomp and froth then go down. The waterer button was stuck [...]

Histoplasmosis in a Cat- Histoplasma capsulatum

History: A 4 year old cat had been inappetant for 3 weeks with normal CBC/ CHEM. It was treated with Depo-Medrol and 2 weeks later was severely dyspneic and had anisocoria.
Gross Findings:
Lungs: Multifocal to coalescing granulomas throughout the lung
Spleen: Focal granuloma
Meninges: Diffuse suppurative meningitis
Comment: An impression smear was made of [...]

Blackleg in a herd of Steer- Clostridium chauvoei

History: A steer was found dead with no prior clinical signs. The farm had 12 animals die (of 550) over the past 10 days.
Gross Findings:
Subcutaneous and muscular emphysema throughout the animal. There was moderate to severe retroperitoneal and mediastinal edema. The hind-limb skeletal muscles had multiple dark red areas and were emphysematous. They [...]

Tyzzer’s Disease in a Feline

Answer: Whats your diagnosis # 1
this page was originally posted as WYD # 1, click below for the original page or scroll down for the rest of the information.
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Multifocal hepatic necrosis

Warthin Starry Silver stain.

Clostridium piliforme is visible at the edge of necrotic areas. We also found focal transmural necrosis of the [...]

Chronic Cystitis and Pyelonephritis in a Boxer

History: A 10 year old female spayed Boxer had an acute onset of Respiratory distress and a long history of mildly elevated BUN and Creatinine that spiked at the time of presentation.  Radiographs of the chest showed diffuse miliary radio-opaques lesions.
Gross Findings:
Kidneys: Hydronephrosis and pyelonephritis, bilateral.

There was clear fluid with some white flocculent material [...]