Equine Health Update EHU Vol 20 Issue 02 - Page 36

EQUINE | International News selected cases. Lymphoma may occur as a mass in, on, or around the eye, and the clinical signs associated with its development will depend on its location. Although occasionally this may be a solitary mass, lymphoma has a high likelihood of involving distant structures, and without very early recognition and treatment is often fatal. Complete surgical removal of the eye and surrounding structures may be curative in some cases. Mast cell tumors are occasionally seen affecting the structures around the eye, and can usually be successfully surgically removed. In horses (unlike in dogs) they are rarely a malignant lesion. chance of success, but is only available in a small number of specialty centers. Melanomas are most commonly found in grey horses and may be within the skin or affecting the structures of the eye itself. Although a majority are considered benign tumors, in horses that are not grey melanomas are likely to be malignant, and even in grey horses they often metastasize. Skin melanomas are usually successfully treated via surgical excision, but melanomas within the eye itself often require enucleation (removal of the eye). Occasionally, surgical removal of an intraocular melanoma may be successfully attempted, but this is a highly specialized surgery and is rarely a suitable option. Squamous cell carcinomas commonly are diagnosed in the structures around the eye, and are especially likely to occur in horses with limited pigmentation of these structures. They will eventually metastasize, and early complete surgical removal is recommended as it is frequently curative, although horses with no pigmentation will always be at risk of developing further lesions. Radiation treatment and topical or intralesional chemot ‘•Ι…Α䁍…Έ…±ΝΌ‰”ΥΝ•™Υ°₯Έ(ΜΨ)=Ρ‘•ΘΡΥ΅½ΘΡεΑ•Μ…Ι”Ω•ΙδΙ…Ι”°‰ΥЁ΅…δΑΙ•Ν•ΉΠ₯Έ)„Ω…Ι₯•Ρ䁽˜™½Ι΅ΜΈ%Ё₯́…±έ…έΑΙΥ‘•ΉΠΡΌΝ••¬•…Ι±δ)Ω•Ρ•Ι₯Ή…Ιδ₯ΉΡ•ΙΩ•ΉΡ₯½Έέ‘•Έ΅…Ν͕́…Ι₯Ν”ΡΌ΅…α₯΅₯ι”)Ρ‘”‘…Ή”½˜„½½Ι•ΝΥ±ΠΈ) =9Q P聹Ή„!½±±₯Μ° Y•Ρ5•° Y%4°₯Α %4°5I YL°)…ΉΉ„Ή‘½±±₯Ν…‘ΠΉ½ΙœΉΥ¬°Ή₯΅…°!•…±Ρ QΙΥΝΠ°9•έ΅…Ι­•Π°UΉ₯Ρ•)-₯Ή‘½΄)!ΥΙΙ₯…Ή”!…ΙΩ•δθ%΅Α…Π…ΉI•ΝΑ½ΉΝ”)I•±…Ρ•ΡΌQ•α…́ΕΥ₯‘Μ)!ΥΙΙ₯…Ή”!…ΙΩ•δέ…́„ΝΡ½Ι΄™½ΘΡ‘”Ι•½Ι‰½½­Μ°)ΝΡΙ₯­₯ΉœΡ‘”Q•α…́½…ΝЁ₯Έ±…Ρ”՝ΥΝΠ€ΘΐΔάΈQ‘”ΝΡ½Ι΄)‰…ΡΡ•Ι•½΅΅ΥΉ₯Ρ₯•Μέ₯Ρ  …Ρ•½Ιδ€Πέ₯Ή‘́…Ή)±₯Ή•Ι•™½Θ™½Υȁ‘…εΜ°…Ή…ΥΝ₯ΉœΙ…₯Έ‰…Ή‘́ΝΡɕэ‘₯Ήœ(Δΐΐ΅₯±•Μ₯Ή±…Ή…Ή€Μΐΐ΅₯±•ΜΥΐΡ‘”½…ΝΠΈ!•…Ωδ)Ι…₯Ή™…±°Ν…ΡΥΙ…Ρ•Ρ‘”!½ΥΝΡ½Έ΅•ΡΙ½Α½±₯Ρ…Έ…Ι•„°έ₯Ρ )½Ή”Α…ΙΡ₯Υ±…ȁ±½…Ρ₯½ΈΙ••₯Ω₯Ήœ₯Έ•α•Ν́½˜€Ψΐ₯Ή‘•Μ)…ΉΝ•ΡΡ₯Ήœ„Ή•άΙ•½Ι™½ΘΙ…₯Ή™…±°Ρ½Ρ…±Μ₯Έ„Ν₯Ή±”)TΉLΈΝΡ½Ι΄Έ]‘₯±”Ρ‘”έ₯Ή‘₯₯Ρ́͑…Ι”½˜‘…΅…”°)₯Ё݅́ё”΅…ΝΝ₯Ω”…΅½ΥΉΠ½˜Ι…₯Έ…ΉΝΥ‰Ν•ΕΥ•ΉΠ)™±½½‘₯Ήœ½Ω•ΘΡ‘”™½±±½έ₯ΉœΡέΌέ••­ΜΡ‘…Ё‘…Ρ‘”)΅½ΝЁ‘•Ω…ΝΡ…Ρ₯Ήœ₯΅Α…Π½ΈΑ•½Α±”°…Ή₯΅…±Μ°ΑΙ½Α•ΙΡδ°)…ΉΙ½ΑΜΈ+ŠˆΕΥ₯Ή”!•…±Ρ UΑ‘…Ρ”ƒŠˆ