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las > Surgical Skin Diseases in Equine > Flashcards

Surgical Skin Diseases in Equine Flashcards

1
Q

this tumor is sometimes seen in paranasal sinuses of equines

A

SCC

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2
Q

areas common for melanoma in equines

A
  • perineum/base of tail
  • prepubital sheath
  • lips
  • parotid region
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3
Q

treatment for lipomas in horses

A

complete surgical excision

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4
Q

common locations for SCC in equines

A

MUCOCUTANEOUS junctions

  • eyelids/cornea
  • genital
  • face/PARANASAL sinus
  • perianal
  • limbs
  • gastric (rare; euthanize)
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5
Q

appearance of lipomas

A

non painful soft fluctuant or firm INFILTRATIVE mass on flank of YOUNG horse

locally invasive into body wall

if SQ involved with be encapsulated

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6
Q

diagnosis of SCC in equines

A

HISTO/excisional biopsy = G.S,

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7
Q

NEVER use this to treat sarcoids

A

xxterra (high risk of transformation!!)

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8
Q

is equine cutaneous mastocytosis neoplastic?

A

NO

it’s an inflammatory reaction to dysplastic mast cells and eosinophils

do NOT cause pruritus or histamine release

when on limbs may be calcified/ show up on rads

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9
Q

common location for sarcoids

A
  • heads/neck (periorbital NOT eyelids)
  • limbs
  • ventrum/groin
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10
Q

appearance of fibroblastic sarcoids

A

ulcerative with bad local infiltration

may be pedunculated

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11
Q

calcinosis circumspecta is common in ______ and found on _______

A

YOUNG horses

lateral stifle

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12
Q

brachytehrapy

A

radiotherapy using iridium-192 grains implanted into tumor every 3 weeks

may lead to fibrosis

success rate against sarcoids 90%

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13
Q

EDx of sarcoids

A

BPV (flies) + trauma -> fibroBLASTIC neoplasia with epithelial proliferation

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14
Q

Edx papillomatosis

A

EPV (direct/vectors) -> abnormal proliferation and hyperkeratosis in YOUNG horses that are slightly immunosuppressed

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15
Q

most common skin tumor in equine

A

sarcoids

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16
Q

common locations for papillomatosis in equine

A
  • face
  • distal limbs
  • genital
17
Q

teletherapy

A

radiotherapy using gamma linear accelerator

18
Q

what to remember about treating sarcoids

A

multimodal best

cryotherapy can NOT be used for periorbital

19
Q

5-FU is NOT very effective for…

A

melanoma

20
Q

These skin masses are seen in YOUNG horses (3)

A
  • papillomatosis
  • lipomas
  • calcinosis circumspecta
21
Q

treatment for melanoma in horses

A
  • surgical removal = G.S.
  • best if multimodal
  • chemo (cisplatin, carboplatin)
  • hyperthermia
  • radiation
  • cimetidine and oncept canine vaccine need more research
22
Q

EDx SCC in equines

A

equine PV-2 + trauma or chronic inflammation

23
Q

appearance of melanoma in horses

A

-firm nodules that coalesce with time

may be ulcerative with BLACK SMELLY EXUDATE

slow growing but potential for malignant behavior and can be locally invasive

24
Q

common location for lipomas in equines

A

flank/body wall

25
Q

diagnosis of equine cutaneous mastocytosis

A

FNA/biopsy

if on limbs, may see on rads since lesions on limbs often calcify

26
Q

signalment for SCC in equines

A

paint, QH, appaloosa, draft

usually older

if <8 yo = more malignant

27
Q

appearance of occult sarcoid

A

flat with hyperkeratosis and alopecia

28
Q

cryotherapy should NOT be used to treat this skin tumor in equines

A

PERIORBITAL sarcoids

29
Q

appearance of verrucose sarcoids

A

wart-like raised, leathery, scaley

30
Q

diagnosis of melanoma in horses

A

grey horse

FNA

31
Q

EPV-2 + trauma/irritation ->

A

SCC

32
Q

appearance of SCC in equines

A

ulcerative and cauliflower like

bad odor and secondary infection common

usually slow growing and slow to met (mainly to LNs) but LOCALLY INVASIVE

33
Q

histo/excisional biopsy are gold standard diagnosis for…

A
  • sarcoids
  • SCC
  • habronemiasis
34
Q

second most common skin tumor in equines

A

scc

35
Q

treatment for SCC

A

similar to sarcoids EXCEPT cryotherapy is good for eyelids

beta radiation with strontium 90 is good for corneal SCC following keratectomy

5-FU is good for genital

36
Q

a mass on a horse that’s ulcerative with black smelly exudate should make you think…

A

MELANOMA

37
Q

diagnosis of habronemiasis

A

HISTO is gold standard

look for yellow granules

common on eyes, genitals, wounds

38
Q

signalment for sarcoids

A

any age

QH, arabian, appaloosa

39
Q

appearance of nodular sarcoids

A

firm well defined SUBCUTANEOUS spherical (with or without dermal involvement)

las (51 decks)

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