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45 Cards in this Set
- Front
- Back
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What is the most common cutaneous tumor in horses worldwide?
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Equine Sarcoid
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What is the most likely cause of Equine Sarcoids?
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papilloma virus
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Are sarcoid aggressive?
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yes locally
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T/F Flies may play an imp part of sarcoid pathogensis.
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T
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T/F Sarcoids metatasize to secondary sites like the lungs.
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F
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What is the most common signalment of sarcoid patient?
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1-6 year old
Gelding |
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Single sarcoid lesions are often assocaited wtih __ sites.
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wound
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T/F Sarcoids can multiply on the individual or remain static
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T
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T/F Sarcoids can spontaneous, completely, and permanently self-cure.
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T
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6 Forms of Sarcoids are
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Occult
Verrucous (warty) Nodular Fibroblastic Mixed Malevolent |
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Describe the predilection sites of each form of sarcoid
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Occult -
around mouth eyes, neck, medial aspects of forarm and thigh Verrucous (warty) - face, body, groin/sheath Nodular - grouin sheath eyelids Fibroblastic - groin, eyelid lower limbs, coronary band, sites of previous skin injury, site of other sarcoids when injured Mixed- face, eyelid, groin, medial thigh Malevolent- newly described - jaw, face, elbow, and medial thigh (hx of repeated trauma to other types, ie sx) |
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Describe each of the forms of sarcoids?
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Occult -
roughly, circular hairless areas, mildly hyperketotic Verrucous- wart-like growth in and on skin lesions maybe sessile (flat-based) or pedunculated (narrow neck) Nodular- firm, well-defined SQ spherical nodules (single, few, or hundreds), +/- freely movable Fibroblastic- agreesive, fleshy, ulcerated |
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T/F All forms of sarcoids may become fibroblastic.
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T
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Occult form of sarcoids are slow-growing and may progress to __ or __.
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verrucous fibroblatic
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What stimulus often initates a form of sarcoid to progress to fibroblastic?
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injury or interfered with
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T/F Nodular forms of sarcoid tend to be found on thick skin.
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F - thin skin
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What is the problem with fibroblastic sarcoids? (2)
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B-E AGG-R-ESS-IVE :-0
LOCALLY INVASIVE |
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Dx of sarcoid
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signs
biopsy?? risky business |
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Sarcoid Px
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guarded
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Sarcoid Tx
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1. benign neglent - too large/small esp occult and small verrucous forms
2.cryotherapy, sx excision, immunotherapy, laser, local radiaion, topical intratumoral inj of antineoplastic drugs 3. large lesions - sx debunking w/other tx 4. intralesional inj - antineoplastic |
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what is the 2nd most common cutaneous equine tumor?
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melanoma (melanosarcoma)
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What is the usual signalment of melanoma?
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gray (arab or perchaeron)
>6-8yrs |
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What is melanoma?
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benign tumors of melanocytes
non-invasive space-occupying lesions |
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Most common sites of melanoma? (4)
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anus
vulva tail prepuce |
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3 types of melonoma growth patterns?
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slow growth and no mets
slow growth for years --> sudden growth w/mets rapid growth and malignancy from begining |
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What do they look like? Size? Location of Melanoma
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small --> large
firm spherical nodules, maybe pedunculated skin or SQ |
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T/F melonmas are typically slow growing
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T
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How can melanomas interfer with other organs/ts?
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pressure necrosis
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If a melanomas ulcerates how do you know?
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produce thick, black, tarry discharge
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Dx of melanoma?
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signs
FNA |
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Tx of Melanoma (2)
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single lesion - sx (wide margin)
cryosx and cimetidine - variable results |
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Px of Melanoma
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Caution - esp w/grays w/severe aggressive melanosarcoma may result
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T/F Chesnuts have their own special melanoma.
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T - Amelonma melanoma
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What is an invasive tumor of squamous epithelial cells at mucocutaneous junctions, head, and genitalia?
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Squamous Cell Carcinoma
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The skin and eye forms of SCC can be caused by what?
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chronic high UV light
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SMEGMA can cause what?
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SCC of the weiner
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T/F SCC is no agressive in younger horses
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F is VERY aggressive in young horses and have mets to ln
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T/F the ocular form of SCC is often benign, proliferative and can ulcerate the 3rd eyelid
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T
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T/F in older horses SCC is aggressive locally, but can also met
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T
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4 CS of SCC
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solitary granulating, ulcerated "sore" that wont heal
small verrucous nodules in the genitalia necrosis odor |
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Dx SCC
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biopsy
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SCC Tx (3)
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Early - Sx w/wide margins
Amputation of tail, enucleation of eye, remove 3rd eyelid, amuptation of the weiner (bobitectomy-hahahahah i so funny) other - cryotherapy, hyperthermia, radiation therapy |
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T/F All 2-3 year old horses get warts
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T
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What should be kicking you in the face if a 3-5yr old has warts?
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immunosuppression
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Tx of Warts
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Time
Euth - jk |
