ADVICEFROMTHE VET
RossdalesVeterinarySurgeons canoffer a multi-disciplinaryapproach to the diagnosis and treatment of all forms of equine cancer,with specialists in internal medicine, surgery, dermatology and ophthalmology. Contactuson01638 663150 or visit
www.rossdales.comfor moreinformation.
Fig3Squamous cell carcinomaonthe thirdeyelid
horses. SCCmostcommonly has a‘cobblestone’ or ‘cauliflower-like’ appearance, but in itsearly stagesitcan appear as asmall area of pigment loss, crusting, ulceration or irritation around the eye. Horseswho lack pigment on their eyelids and around the eyeare moreatrisk. Irritation from ultraviolet (UV) light is thought to promotethe development of SCC. Effectivetreatment reliesonearly diagnosis and
mayinvolvesurgery,chemotherapyorradiotherapy. Larger tumours, or those that affectthe eyeball, will requirereferral forspecialistmedical treatment, or to an ophthalmologist, who cancombine surgical treatment with other medical treatment to limit the risk of recurrence. Outcomescan be excellent with early,aggressivetreatment.
GRANULOSA CELL TUMOUR This is acommon tumour of the ovariesofmares,
which usually affects only one
ovary.The tumour if composed of cells from the lining of the follicle and theyproduceoestrogen and/or testosterone. The symptoms aretherefore masculine/stallion- likebehaviour or acontinuing stateofoestrus or anoestrus. The ovary increasesinsizeand can be identified by rectal examination by avet and confirmed by reproductiveultrasound, or by a blood test to look at serum levels of anti-Müllerian hormone (AMH). Surgical removalofthe affectedovary is now
usually carried out via laparoscopyinthe standing, sedated
horse.The mareusually returns to breeding soundness within 3to12months.
Fig5Laparoscopybeing performed using sedation and local anaesthesia
ABOUT THE AUTHOR
Emily F. Floyd BVSc, DipACVIM, MRCVS Emily is an RCVSrecognised Specialistin Equine Medicine (Internal Medicine) and aDiplomateofthe American College of Veterinary Internal
Medicine.She joined Rossdalesin2009 as amember of the internal medicine team at Rossdales Equine Hospital and became apartner in 2016. Emily’smain role is working within the
Neonatal IntensiveCareUnit in addition to working within the internal medicine department, whereshe seesalarge number of medical casesannually.
Fig4Granulosa cell
tumour.The affectedovary of the marewas removedvia laparoscopy(Fig5)
PleasementionCentral HorseNewswhen respondingtoAdvertisementsFEBRUARY/MARCH2021
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