ChatGPT Exam III: Occular Flashcards
(43 cards)
What are the most common primary ophthalmic tumors in dogs and cats?
Orbital, eyelid, third eyelid, cornea, uveal, choroidal.
What are the signs of orbital neoplasia?
Exophthalmos, third eyelid elevation, strabismus, generally non-painful.
What are the common tumors found in dogs with orbital neoplasia?
- Adenocarcinoma
- Fibrosarcoma
- Osteosarcoma
- Meningioma
- Lymphoma
What is the most common tumor in cats with orbital neoplasia?
Nasal carcinoma.
What diagnostic methods are used for orbital neoplasia?
- Ocular ultrasound
- CT/MRI
- FNA/biopsy
What are the treatment options for orbital neoplasia?
- Exenteration
- Orbitotomy for small masses
What is the prognosis for orbital neoplasia?
Variable, depends on tumor type and invasion.
What is the most common eyelid neoplasia in dogs?
Meibomian gland adenoma (benign, papilloma-like).
What are the treatment options for eyelid neoplasia in dogs?
- Cryotherapy
- Wedge excision if large
What is the most common eyelid neoplasia in cats and horses?
Squamous Cell Carcinoma (SCC).
What are the risk factors for eyelid neoplasia in cats and horses?
UV exposure, lightly pigmented eyelids.
What is the treatment for eyelid neoplasia in cats and horses?
- Surgical excision
- Radiation
- Topical chemotherapy (mitomycin C, 5-FU)
What are common tumors in third eyelid neoplasia?
- SCC (especially bovine)
- Hemangioma/hemangiosarcoma
What is the treatment for third eyelid neoplasia?
- Local excision
- Cryotherapy for hemangiosarcoma
What is the most common neoplasia found in the cornea?
Squamous Cell Carcinoma (SCC).
In which type of dogs and horses is corneal neoplasia commonly seen?
Brachycephalic dogs and UV-exposed horses.
What conditions are linked to corneal neoplasia?
- Chronic keratitis
- KCS
- Immunosuppressive meds
What are the treatment options for corneal neoplasia?
- Keratectomy
- Cryotherapy
- Radiation
What types of tumors are classified as anterior uveal tumors in dogs?
- Ciliary Body Adenoma/Adenocarcinoma
- Melanoma
What is the prognosis for ciliary body tumors in dogs?
Slow-growing, benign.
What type of uveal tumor is common in cats?
Diffuse Uveal Melanoma.
What is a significant characteristic of lymphoma in the anterior uveal tumors of cats?
Bilateral, often a sign of systemic lymphoma.
What is the treatment for progressive anterior uveal tumors?
Enucleation if progressive or causing glaucoma.
How aggressive is choroidal melanoma compared to anterior uveal melanoma?
More aggressive.