Equine Oncology Flashcards
Which breed of horse are predisposed to melanoma?
Lipazzaner
Which breeds of horse are predisposed to ocular SCCs?
Shire and Clydesdale
What are the 4 main groups of paraneoplastic syndrome in the horse?
- Mucocutaneous/skin
- Neurological
- Haematological
- Endocrine and metabolic
What is the most common haematopoetic neoplasia in horses?
Lymphoma
Which type of lymphoma is most common in horses aged 4-12y?
Multicentric
What are the signs of multicentric lymphoma?
VAGUE: weight loss, depression, ventral oedema, recurrent fever
How is multicentric lymphoma diagnosed?
cytology or biopsy of masses
How is multicentric lymphoma treated?
Surgery or Chemo
What are the signs of alimentary lymphoma?
malabsorption, weight loss, colic
Which type of lymphoma is most common in horses aged >12y?
Alimentary
How is alimentary lymphoma diagnosed?
cytology (peritoneal fluid), biopsy
How is alimentary lymphoma treated?
Surgery or chemo
Which types of lymphoma occur in horses of all ages?
Mediastinal, Thoracic or Thymic
What are the clinical signs of mediastinal lymphoma?
weight loss, depression, ventral and limb oedema, pleural effusion
How is Mediastinal lymphoma diagnosed?
cytology (pleural effusion), biopsy
How is mediastinal lymphoma treated?
Palliative care - no cure, hopeless Px
Which type of lymphoma is seen in older horses?
Cutaneous
What are the clinical signs of cutaneous lymphoma?
Subcutaneous and cutaneous nodules
How is cutaneous lymphoma diagnosed?
Biopsy nodule
How is cutaneous lymphoma treated?
Surgical excision if possible
Which highly malignant tumour affects middle aged to older horses, and may present with respiratory, MSK of haemorrhagic signs?
Haemangiosarcoma
how is haemangiosarcoma diagnosed?
cytology, biopsy - difficult due to risk!
how is haemangiosarcoma treated?
Palliative care! Poor Px
What are the 4 common oral cancers of horses?
Ameloblastoma
Ossifying fibroma (young)
SCC (most common)
Melanoma
