What is it called when the granulation tissue proliferates above the skin edge, it interferes with epithelialization and wound contraction?
excessive granulation tissue "proud flesh"
What usually involves the lower extremities, horses spending time in ponds, sometimes involvement of upper limb and mammary glands?
What occurs almost exclusively in the nasal passages?
How is phycomycosis definitively diagnosed?
histopathology and culture
Is phycomycosis zoonotic?
yes, if infection involves arteries, routine treatment is amputation
What is granulation tissue that does not respond to routine treatment, associated with warm weather, very small cores of exudate, associated with wounds, and in thin skinned areas?
cutaneous hambonemiasis "summer sores"
What is the cause of cutaneous hambonemiasis?
allergic reaction to the aberrant larvae of the habronema species
How is cutaneous hambonemiasis managed?
remove the larvae, topical meds, control and remove the excessive granulation tissue, control the allergic response
What can occur as a result of trauma causing periosteal damage, open wounds causing drying of the periosteum, application of caustics to periosteum or bone?
What can develop as a result of poor drainage of wounds that involve bone, hematogenous infection (most common in folds)?
What commonly develops as a result of continued irritation from either physical or infectious causes?
What can result from localization of a hematogenous infection, secondary to a poorly draining wound?
How does an abscess develop?
bacteria localize, white blood cells migrate, purulent exudate formed by living and dead WBC, bacteria and cellular debri
What are wounds that reach a stage of healing and then dont get worse but they dont heal, possily due to animal in poor nutritional state, epithelial fatigue, chronic infection, overexuberant attempts to control granulation tissue?
What is a wound that pumps the air, wound to the axilla are most commonly involved?
What is the most common skin tumor of the horse, develops in 3-6 year old animals, incidence decreases after 15?
What is the possible viral etiology of sarcoids?
bovine papilloma virus
What are ways to definitively diagnose sarcoids?
histopathology, PCR for bovine papilloma virus
20% of neoplasms recorded in the horse are what?
squamous cell carcinoma
What are the most common areas for squamous cell carcinoma involvement?
exposed areas of light colored animals
What occurs commonly in grey and chesnut horses, usually in animals greater than 10 years old, associated with fading hair, and frequent areas involved?