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  1. #1
    Join Date
    Mar. 29, 2009

    Default What would cause a lump to abcess after 2 years?

    When I first started working with my mare in January of 2011 she had a small (maybe the size of an almond with its shell) lump on the side of her neck, in the area you give IM shots. I had my teacher/boss look at it, but since she showed no discomfort with it, you could poke/prod/squeeze it without her so much as blinking, and she had no signs of being sick, we didn't call a vet and just kept an eye on it.

    Since then, I've kept an eye on it, even had a vet tech friend look at it, but its never changed so I've never been concerned about it.

    I didn't see my horse for a couple days, and it appears that on Thursday or Friday it suddenly grew, and late Friday/early Saturday it broke open and drained. I can't see anything in it, it still doesn't bother her to poke or prod, and she still has no fever or change in appetite.

    My big question is, aside from keeping it clean and keeping an eye on her, do I need to worry about it being something she could pass on to other horses, and why would it take this long for it to abbcess?

  2. #2
    Join Date
    Jan. 16, 2002
    West Coast of Michigan


    It may have contained a bit of a foreign body or "sequestrum" that set up enough local inflammation to form a lump. Sometimes, eventually, the body just can't keep up with walling something like this off and the inflammation will rev up again, at which point the lump can become active or drain or start to swell and hurt. It could have been from her rubbing it on something, an inadvertent scrape, or just random.

    I'd say just normal wound care is appropriate for starters, but you might want to have it excised for good just to make sure it doesn't become a chronic nuisance.
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    1 members found this post helpful.

  3. #3
    Join Date
    Nov. 23, 2001
    Catharpin, Virginia


    A foreign body trying to work its way out would be my guess.

    Once of my horses had a big spinter in his shoulder that broke off as we tried to remove it. Quite deep, so we didn't want to completely open him up. It healed over. Not sensitive at all.

    2 years later it opened up and a small piece of wood came out. It healed over again (leaving just a small lump). A year later it opened again and the rest oozed out, presumably with the last bit of foreign body (wood).

    Just treated as any other wound. Never seemed to bother him.

  4. #4
    Join Date
    Aug. 25, 2005


    Small foreign body just sitting there quietly, til it annoyed the body by just being there. It has now been tossed out. No longer an uninvited guest.

    Had a horse with a lacerated knee. Healed but always had a little lump, like an OTTB with a knee. Years later it opened, drained and "Voila!" a normal looking knee.
    Some riders change their horse, they change their saddle, they change their teacher; they never change themselves.

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