Fatty Lpoma Turning Cancerous... Or Shrivelling Off???

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Fatty Lpoma Turning Cancerous... Or Shrivelling Off???

This is a discussion on Fatty Lpoma Turning Cancerous... Or Shrivelling Off??? within the Dog Health forums, part of the Keeping and Caring for Dogs category; I co-own an 11 year old retired hunting dog with an old and very trusted breeder friend. He was bred by me and generally comes ...

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Old 02-25-2017, 07:52 PM
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Fatty Lpoma Turning Cancerous... Or Shrivelling Off???

I co-own an 11 year old retired hunting dog with an old and very trusted breeder friend. He was bred by me and generally comes back for visits several times a year, and it's likely that after his last visit I'll soon be taking him back permanently.

The last time I saw him was about 5-6 weeks ago. He's had a fatty tumor on his chest for about 2.5 years, possibly a little longer, in the exact same spot his mother had one before we found a mammary tumor on her. Incidentally, towards the end, his mother's lipoma began to grow, harden and discolor- not sure if the cancer had spread there, or the lipoma itself just turned cancerous (or always was).

Anyway, this dog was seen by my Vet when I had him here last time, and the lipoma was examined and dismissed as just a fatty growth at that time. Also, I should mention his blood work came back normal, as well.

Last night my co-breeder brought him here again, and I happened to notice a dark spot on the lump. It's very strange, though. The lipoma does not feel the same - its definitely harder, but oddly enough, it seems a bit smaller, especially in the area of the discoloration, where it is also slightly depressed. It's difficult to tell from the pictures I've taken, but the skin on the dark area is very dry and peeling.

My co-breeder thought it might be shrinking, healing and/or ready to burst. She also believes it could be an allergic reaction to the new food she started using about 2-3 weeks ago. My first thought was this has turned malignant.

He has a Vet appointment scheduled for Tuesday, so we'll know more then, but I'm curious if anyone has actually seen benign fatty tumors shrink or burst? It seems crazy, but in a way, the darkened area does look almost shriveled, not at all like any tumor I've ever seen, so maybe there is something to my co-breeder's theory?



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Old 02-26-2017, 01:04 AM
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UPDATE: After taking these pics, I shaved the area just to get a better idea of size and the extent of the peeling, which looks like a black & blue upon closer inspection. Well... my cousin dropped by while this was going on and sent a pic of the shaved tumor to his neighbor who is a dog lover and a surgeon.

He swears it appears to be a necrotic tumor. I have absolutely no idea if that is the case, however, the more I look at it, the more it does have that color of dying but not yet dead flesh. The peeling and the fact there is somewhat of a depression under the dark area (which has spread slightly since I took the first set of pics) make me suspicious that he could be right.

Going to see if I can get his appointment bumped up to Monday. Very, very perplexing, because if this is dying tissue, then what in the heck killed it
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Old 02-26-2017, 06:46 AM
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It's good that you are heading to the vet ASAP. I'm sorry that you have to go through this.

There are a bunch of reasons for tissue to become necrotic, some as simple as decreased blood supply to the area because of pressure. Has he been laying directly on the area for long periods? Try not to panic too much, the vet is the only one who can diagnose why.

On a genetic note, it is really really really rare for lipomas to metastasize and if this has happened to both mum and son it might be a genetic predisposition in that line. It might be worth considering removing the line from breeding programs.
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Old 02-26-2017, 01:10 PM
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Originally Posted by Chas View Post
It's good that you are heading to the vet ASAP. I'm sorry that you have to go through this.

There are a bunch of reasons for tissue to become necrotic, some as simple as decreased blood supply to the area because of pressure. Has he been laying directly on the area for long periods? Try not to panic too much, the vet is the only one who can diagnose why.

On a genetic note, it is really really really rare for lipomas to metastasize and if this has happened to both mum and son it might be a genetic predisposition in that line. It might be worth considering removing the line from breeding programs.

It's very possible he's been lying on it, since the lump is a bit off center on his chest. He's an indoor-outdoor dog at my co-breeder's house, and while he has a bed, seems to prefer hard surfaces like her porch. That's a very interesting and plausible theory that I will definitely bring to the Vet's attention.

As for removing this bloodline from the genepool - this dog was used primarily for hunting and was never actually bred because whilst he was a good rabbit dog in a pack, his solo performance was poor. I have his littermate brother who is healthy as a horse, a half sister, nieces, nephews -this is the healthiest, hardiest bloodline I've dealt with. No epilepsy, heart issues, very low to almost non-existent incidence of IVDD, etc. Beagles in general have thyroid/adrenal problems which predisposes them to become lump formers and, unfortunately, the breed has a high rate of hormonal cancers I can't cull an entire bloodline because they tend towards cancer at 10-11+ years of age. Besides, of the five or so dogs I've had whose lipomas were precursors to cancer, only two were in this bloodline. And one was possibly a Beagle mix.
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Old 02-26-2017, 04:37 PM
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Fair enough, I don't know anything about Beagle bloodlines. I didn't mean to come across as pushing for that, just wanted it there to consider.
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Old 03-19-2017, 05:38 PM
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Necrotic tumor any updates? My rescue collie has one on his ear . It's like dried blood and ( picture over done pork rinds ) crumbling off all the time .
He also has a number of lipomas . One on his chest where is big Ruff is . Right after he had surgery for one that she was sure was cancerous after the biopsy ( she said the location was bad: his nipple) right after that his lipoma BLEW up huge And he scratched and burst it . It has a dark spot on it where he scratched it ... and it did that once more and now it is there but smaller . When the vet found the tumor on his ear I was like can't u just localize and remove it ? She said he has go back under ..neither he or my family or my bank account were ready for that . Why couldn't she have seen it when we paid her to clean his ears and teeth during the surgery ? And she sent home not being able to walk ... back legs splayed , eyes wobbly ... whicj didn't seem right . The collie rescue said I should look into finding a vet willing to use a special anesthesia that is good for collies . In the meantime he still has the necrotic tumor ... is there a problem with that ? Other than that this dog is blowing up huge ! Gained 20Lbs in a year and half ! ( we are having a dickens of a time with him on that ... never had a food obsessed collie before they we're always easy keepers).

I have been trying to find a string on overweight dog / managing diet to lose weight and can't find one ...
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