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Basidiobolus haptosporus Introduction A member of Zygomycetes, a soil saprophyte, causing lesions on chest, abdomen, head and neck. A similar disease to Pythiosis with several important clinical differences. Aetiology/Pathophysiology Characteristically this disease occurs in a much drier environment than Pythium, usually in dusty conditions. Lives in the soil. Injury allows entry to horse’s body. Single lesions are common Clinical Presentation As for Pythiosis but growths are more shallow, are confined to neck and abdomen with no isolations on legs. Kunkers are small to non-existent. Pruritus is moderate to severe Differential diagnosis Pythiosis, mycetoma exuberant granulation tissue, habronema infestation, neoplasms, fibroblastic sarcoids. Diagnosis As for Pythiosis infection. Occurs in drier conditions and organisms probably live in soil. "Kunkers" are smaller and few in number. Fungal hyphae found in foci of necrosis. Biopsy: culture punch samples direct into Sabouraud’s dextrose agar. Management Surgery is curative if all affected tissue is removed. Sodium iodide 1g/15kg b.w. given intravenously twice weekly as a 3.5% solution in normal Sodium chloride solution. No vaccine is available. Prognosis Guarded to good. 104 ACVSC Proceedings Dermatology Chapter Science Week 2005
References Alfaro AA & Mendoza L (1990) - Four cases of equine bone lesions caused by Pythium insidiosum; Equine vet J 22(4):295-297 Blackford J (1984) - Superficial and deep mycosis in horses; Vet Clinics Nth Am LargeAnimal Practice 6:1 Bridges CH & Emmons CW (1961) - A Phycomycosis of Horses caused by Hypomyces destruens; J Am vet med Ass 138:579 Eaton SA (1993) - Osseous involvement by Pythium insidiosum. Compend Contin Educ Pract 15(3) 485-488 Grooters AM et al (2002) Evaluation of microbial culture techniques for the isolation of Pythium insidiosum from equine tissues: J Vet Diag Invest 14 288 McMullan WC, Joyce JR, Henselka DV & Heitmann JM (1977) - Amphotericin B for the treatment of localised subcutaneous Phycomycosis in the horse: J Am vet med Ass 170:1293 Mendoza L, Villalobos J, Calleja CE et al (1992) - Evaluation of two vaccines for the treatment of Pythium insidiosum in horses; Mycopathologia 119:89-95 Miller RI (1981) - Treatment of equine Phycomycosis by immunotherapy and surgery Aust vet J 57:377-382 Newton JC& Ross PS (1993) Equine pythiosis: an overviewof immunotherapy Comp Cont Educ Prac Vet 15:491 Pascoe RR (1973) The nature and treatment of skin conditions observed in horses in Queensland Aust vet J 49:35-40 Scott DW & Miller WH (2003) Equine Dermatology Elsevier Science (USA) Philadelphia PA . USA Restrepo LF, Morales LF, Robledo M, Restrepo A, Tenica C & Correa de I (1973) - Antioquia Medica 23:13-25, cited by RI Miller (1980) Treatment of Equine Phycomycosis by Immunotherapy and Surgery; Aust vet J 57:377-382 ACVSC Proceedings Dermatology Chapter Science Week 2005 105
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Australian College of Veterinary Sc
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Australian College of Veterinary Sc
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3.00 Afternoon tea 3.30 How I treat
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Dr Jennifer A. Charles BVSc MVS Dip
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Scientists in Feline Medicine in 19
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IgE-bearing cells have been demonst
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years, median age 6.5 years, with a
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dusts, grain smuts, moulds, danders
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References: Evans AG, Paradis MR, &
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Comparatively simple, cheap and eff
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TABLE 1: CURRENT ALLERGENS SELECTED
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AmericanCockroach Cockroach mix
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Patient Preparation Drug Withdrawal
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Each injection site is visually exa
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References 1. Scott DW, Miller WH:
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Intradermal Testing (IDT) in Horses
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TABLE 2 Additional allergens used i
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Allergen Positive reactions Mosquit
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much higher and corresponded to the
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and this and other uncontrolled tri
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Introduction Diagnostic Approach to
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Wheals vary in size and shape and q
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References Evans AG, Paradis MR & O
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Introduction: Equine Chronic Urtica
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Acute treatment - Epinephrine 1:100
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anecdotal success with use of human
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