Horse & Rider - - Ride & Train -

Lo­ca­tion: Like scars, tu­mors can ap­pear just about any­where on your horse’s body. If you have a gray horse, pay es­pe­cially close at­ten­tion to his rec­tum, tail, and sheath area, as this is where melanomas of­ten ap­pear.

What it is: A tumor is a mass of can­cer cells. There are a wide va­ri­ety of dif­fer­ent equine skin tu­mors, in­clud­ing melanomas, squa­mous cell car­ci­no­mas, cu­ta­neous (skin) lym­phosar­co­mas, and sar­coid tu­mors. The only way to ac­cu­rately iden­tify a tumor is for your vet to col­lect a sam­ple (ei­ther through a nee­dle or by cut­ting out a por­tion of the mass) and sub­mit­ting it to a lab­o­ra­tory for eval­u­a­tion un­der a mi­cro­scope.

Look and feel: Tu­mors can have a va­ri­ety of dif­fer­ent ap­pear­ances, and can there­fore be hard to de­scribe.

Should you worry: If you find a lump or bump on your horse that’s new and doesn’t fit any of the other com­mon bump de­scrip­tions, watch it care­fully—es­pe­cially if it seems to be grow­ing. It never hurts to sched­ule a visit from your vet, who can ad­vise if ad­di­tional test­ing is nec­es­sary.

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