Special Veterinary Pathology

MICROSCOPIC LESIONS

Spirocercosis – Esophagus

• Note the granulomatous lesion with cut section of worms. Lesion involving only serous and muscular coats.

 

Spirocercosis – Aorta – Dog

• Note the nodular type of lesion which is made up of fibrous tissue and calcified foci and the cut section of worms.

Onchocercosis – Aorta

• Note the nodular type of lesion that is made up of fibrous tissue, calcified foci and the cut section of worms.

Note the nodular type of lesion that is made up of
fibrous tissue, calcified foci and the cut section of worms.

Parasitic enteritis

• Note the chronic catarrhal changes, infiltration of mucosa and submucosa with eosinophils and lymphocytes and worm section in the centre of the lesion of the submucosa

Immatur amphistomosis-Worm section in the
centre of the lesion of the submucosa

Ancylostomiasis- Intestine

• Cut sections of worms were seen in the lumen. Infiltration of lymphocytes and eospinophils and erythrocytes were observed

Cut sections of worms were seen in the lumen.
Infiltration of lymphocytes and eospinophils and
erythrocytes were observed

Liver fluke infection – Liver

• Note the increased connective tissue surrounding individual lobules with intact lobular structure. Note the presence of newly formed bile ducts and lymphatic infiltration. Note the presence of flukes in ducts and also the cellular infiltration comprising plasma cells, lymphocytes and macrophages

Note the increased connective tissue surrounding individual lobules with intact lobular structure. Note the presence of newly formed bile ducts and lymphatic infiltration. Note the presence of flukes in ducts and also the cellular infiltration comprising plasma cells, lymphocytes and macrophages

Schitosomiasis – Nasal growth

• Note the cut section of with miracidium and macrophages, eosinophils and abundant fibrous tissue

Hepatic coccidiosis- Liver-Rabbit

• Proliferated bile ducts with their epitheilum thrown into papilliform projection. and n umerous oocysts of coccidia in the lumen.

Hepatic coccidiosis- Proliferated bile ducts with their epitheilum
thrown into papilliform projection and numerous oocysts of
coccidia in the lumen

Sarcocyst – Heart

• Note the presence of the cysts containing sickle shaped spores called Rainey’s corpuscles in cardiac muscle

Note the presence of the cysts containing
sickle shaped spores called Rainey’s corpuscles in cardiac muscle

Theileriosis – Lymph node

• Look for the presence of Koch’s blue bodies in cytoplasm

Look for the presence of Koch’s blue bodies in cytoplasm

Trypanosomosis – Brain

• Note the perivascular cuffing with lymphocytes