Lecture 42 - Reproductive IV

Contagious

S. aureus, S. agalactiae, and M. bovis are all causes of what type of mastitis?

Environmental

E. coli, Klebsiella, Enterobacter, and T. pyogenes are all causes of what type of mastitis?

Summer

T. pyogenes and anaerobic bacteria combined cause what type of mastitis?

Gangrenous

S. aureus and C. perfringens cause what type of mastitis?

MMA

Mastitis in sows is often part of what complex, involving mastitis, metritis, and agalactia after farrowing? It is often due to E. coli, Klebsiella, Staph, or Strep.

No

Is mastitis a common occurrence in mares? It is caused by S. zooepidemicus, S. aureus, or coliform bacteria when it occurs and is often acute and localized.

Lentivirus

Viral mastitis in small ruminants is often due to what family of viruses, which includes CAEV in goats and MVV in sheep? They are mainly transmitted through ingestion of infected milk, direct contact, aerosols, and iatrogenic transmission.

Macrophages

Lentiviruses infect what cells in the body, and uses these to disseminate? They can cause chronic lymphoplasmacytic mastitis, destroying glandular tissue and causing fibrosis.

Dogs

Mammary gland tumors are the most common tumors in intact female what animals? 50% of them will be malignant.

Cats

Mammary gland tumors in what animals will be 80-90% malignant?

Mixed

What type of mammary gland tumors arise from a combination of epithelial and myoepithelial cells, often with cartilage or bone metaplasia?

Carcinosarcoma

What type of mammary gland tumor is a biphasic tumor with malignant epithelial and mesenchymal components?

Carcinomas

Low-grade mammary what tumors are the most common mammary tumors in bitches, although benign mixed tumors are also common?

1

Which score of a mammary tumor involves tubule formation in 75% of the tumor, small uniform nuclei, and low mitotic count (0-9)?

2

Which score of a mammary tumor involves tubule formation in 10-75% of the tumor, moderate variation of nuclei, and intermediate mitotic count (10-19)?

3

Which score of a mammary tumor involves tubule formation in less than 10% of the tumor, marked variation and giant nuclei, and high mitotic count (over 20)?

I

What grade mammary tumor will have a score of 3-5, and better prognosis?

II

What grade mammary tumor will have a score of 6-7 and intermediate prognosis?

III

What grade mammary tumor will have a score of 8-9, aggressive behavior, and high metastatic risk?

Lungs

What organs are the most common site of distant metastasis from mammary gland tumors?

Hyperplasia

Mammary what condition represents a reversible enlargement of mammary tissue, often in young or hormonally active females?