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Daisy has melanoma

Rezinha

New Kit
About 2 weeks ago I found a pea-sized lump on Daisy's back, just by her tail so took her to the vets to get it checked out. Once the vet had trimmed her fur to get a closer look we found it was very dark (Daisy is mostly black so we couldn't see it very easily) and it oozed black pus when the scab was knocked off it.

She had the lump removed last week and sent off to the lab to confirm what it was as the vet wasn't sure. The results came back yesterday that it is a melanoma. Unfortunately, the lab said that they didn't manage to get all of it and cells at the edge of the lump were cancerous. I'm now faced with a decision as to what to do next, I've got 2 options:

1. Wait and see if the lump returns and operate again when / if it does. I'm told that in rabbits the disease is not all that likely to spread to other parts of her body but it can't be ruled out. So if it does come back it should be in the same place.
2. Operate again to remove a larger area of skin to ensure that all of the bad tissue is removed.

I'm concerned either way, she came through the operation last week reasonably well and is running about and binkying like mad (probably more than before her op), but is only just getting back to her usual eating patterns, she's not eaten as much hay as I'd like but has been getting plenty of greens (and some treats). I'm concerned that another operation which would be more serious than the first would be hard for her, I don't know how much skin they'd have to remove to ensure they get all of it but the vet mentioned on the phone that she'd probably have to wear a collar which rabbits don't usually need (or like) to stop her disturbing the larger wound and she's only got so much skin to remove. However, operating would probably be more likely to stop the problem coming back in the long run and perhaps by not operating and monitoring we're just delaying another surgery when she could be weaker from the cancer.

Has anyone had a similar experience? Any advice would be appreciated.
 
I'm so sorry to hear this, poor Daisy, although she does sound to be coping well. I've absolutely no experience of this in rabbits, so wouldn't know what to suggest, although having read your post again, I think I'd be inclined to go with option 1, but I'm sure others will come along with more to offer. Xxx
 
Sorry to hear Daisy has this problem. You don't say how old she is? Others more experienced will be along but I think I would go for Option 1. If say it takes 6 months or longer to come back, then at least she will be in a stronger position to withstand the GA.
 
I am sorry to hear of Daisy's condition. How old is she ?

Did the Vet mention any further diagnostics to establish if there is the presence of any metastasises-eg chest Xray ? Unfortunately the disease does spread in Rabbits as in other species. Perhaps you could talk with your Vet about this again ?

If Daisy were my Rabbit and she was not very elderly and she had no other health problems I would want her to have full body radiographs/CT scan to check for any signs of metastatic disease. If all was clear I'd then want my Vet to carry out further surgery to remove additional tissue including a good margin of healthy tissue.

I am sure you will make any decisions based on what will be in Daisy's best interests xx
 
About 2 weeks ago I found a pea-sized lump on Daisy's back, just by her tail so took her to the vets to get it checked out. Once the vet had trimmed her fur to get a closer look we found it was very dark (Daisy is mostly black so we couldn't see it very easily) and it oozed black pus when the scab was knocked off it.

She had the lump removed last week and sent off to the lab to confirm what it was as the vet wasn't sure. The results came back yesterday that it is a melanoma. Unfortunately, the lab said that they didn't manage to get all of it and cells at the edge of the lump were cancerous. I'm now faced with a decision as to what to do next, I've got 2 options:

1. Wait and see if the lump returns and operate again when / if it does. I'm told that in rabbits the disease is not all that likely to spread to other parts of her body but it can't be ruled out. So if it does come back it should be in the same place.
2. Operate again to remove a larger area of skin to ensure that all of the bad tissue is removed.

I'm concerned either way, she came through the operation last week reasonably well and is running about and binkying like mad (probably more than before her op), but is only just getting back to her usual eating patterns, she's not eaten as much hay as I'd like but has been getting plenty of greens (and some treats). I'm concerned that another operation which would be more serious than the first would be hard for her, I don't know how much skin they'd have to remove to ensure they get all of it but the vet mentioned on the phone that she'd probably have to wear a collar which rabbits don't usually need (or like) to stop her disturbing the larger wound and she's only got so much skin to remove. However, operating would probably be more likely to stop the problem coming back in the long run and perhaps by not operating and monitoring we're just delaying another surgery when she could be weaker from the cancer.

Has anyone had a similar experience? Any advice would be appreciated.

Dear Rezinha

I am so sorry to hear about Daisy, and yes I have been in this position and have also known several people in a similar position.

You don't say how old Daisy is? If she's a young rabbit then I may wish the vet to find out the complete area and excise that during surgery.
However, you have to be aware that although you've been told that it's not likely to spread to other parts of her body, I have not found that to be the case.

In one occasion of melanoma, surgery wasn't an option, so I treated alternatively and we coped with the melanoma for quite a long time with no surgical intervention. You also have to think of the quality of life and how many invasive surgeries you wish to put your rabbit through.

Did your vet express an opinion on the best way forward as he saw it?

Good luck xx
 
If Daisy were my Rabbit and she was not very elderly and she had no other health problems I would want her to have full body radiographs/CT scan to check for any signs of metastatic disease. If all was clear I'd then want my Vet to carry out further surgery to remove additional tissue including a good margin of healthy tissue.

This is what I would do if it were my rabbit.

Whilst a second operation so soon after the first is certainly not ideal, I would be concerned about the cancer spreading if I delayed removal of the remaining cancerous cells.
 
Thank you all for your comments and best wishes.

Daisy is 6. She's going back to the vets on Friday for a second post-op follow-up so I'll ask more questions regarding the spread and x-rays etc. and try to get their opinion as to what will be best for her in the long term.
 
Thank you all for your comments and best wishes.

Daisy is 6. She's going back to the vets on Friday for a second post-op follow-up so I'll ask more questions regarding the spread and x-rays etc. and try to get their opinion as to what will be best for her in the long term.


Good luck. I hope your vet can give you some advice :D
 
Thank you all for your comments and best wishes.

Daisy is 6. She's going back to the vets on Friday for a second post-op follow-up so I'll ask more questions regarding the spread and x-rays etc. and try to get their opinion as to what will be best for her in the long term.

As I said in my previous post, I am sure that you will do what ever is in Daisy's best interests.

Whilst this treatment is not licensed for use in Rabbits it may be worth printing out the details to show your Vet

http://www.merial.ca/en/dogs/products/Pages/ONCEPT.aspx

It may be that your Vet would prefer to refer your Rabbit to a Specialist if your Vet were not confident about prescribing 'off license' as detailed in the Veterinary prescribing cascade

https://www.gov.uk/guidance/the-cascade-prescribing-unauthorised-medicines
 
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