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A Slow-Growing Lump on an Older Dog’s Front Leg

Reader Question
approximatley seven yrs ago a small lump & occational limp appeared with my pet dog liffey.

however the lump spead & grew in size in the past 2 yrs.the vets were generalley against any

major treatment due to liffeys age this was amputation of the leg.

my own instinct is if it were possible to inject into the area concerned with perhaps a srtong

sollution of colloidal silver over a period of time?one vet said he susspects soft tissue sacoma

but without a biopcey i dont know.

liffey is an older dog 15yrs but full of life as she always has been.

i give k9 amune booster every day this certainley helps also colloidal silver in pure drinking

warter.liffey is not in pain but very restricted ,saying that she is always wanting to go out for

walks.liffey is a cross between a border collie - german sheperd.


Answer from Our Team

It’s lovely that she is still so full of life at 15. A lump that has been growing slowly for years is more often a soft-tissue mass, such as a soft tissue sarcoma or a fatty tumor, than bone cancer. Osteosarcoma usually causes worsening lameness and a firm, painful swelling on the bone over weeks to months.

Only sampling can tell what it is. A fine-needle aspirate is quick and often done while the dog is awake, and some vets can take a small biopsy with light sedation. Knowing the type helps you plan, even if you choose not to have major surgery.

Please don’t inject colloidal silver or anything else into the lump. There’s no evidence it treats tumors, injecting can cause infection or bleeding, and long-term silver use can cause side effects. If amputation isn’t right for her, your vet can talk with you about pain relief, keeping her mobile, and, for some tumors, palliative radiation. Let your vet know about any supplements she takes so they can check for problems.

Watch for limping that gets worse, pain, or the lump becoming sore or broken open. See bone cancer in dogs for the signs that point to a bone tumor.

This is general information, not a diagnosis. Please follow your own vet's advice.

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