Ever seen a mast cell tumour in an 8 month old dog?

RE: Ever seen a mast cell tumour in an 8 month old dog?

Richard Carter — Fri, 22 Jul 2016 16:58:56 GMT

we had a young dog where mast cells were seen on fna but when we took it out and sent for histo, it was actually an inflammatory response so not always doom if some blue granuoles seen

RE: Ever seen a mast cell tumour in an 8 month old dog?

Rob Davis — Fri, 22 Jul 2016 12:19:25 GMT

A colleague diagnosed MCT in a 5 month old Labrador recently. It has made me more inclined to take FNAs from suspected histiocytomas, as I have to admit that I would have left this alone at the time.

RE: Ever seen a mast cell tumour in an 8 month old dog?

Kara Gibson — Fri, 22 Jul 2016 10:47:19 GMT

I warned them it looked likely but was just suprised based on my own experience.

RE: Ever seen a mast cell tumour in an 8 month old dog?

Martin Atkinson — Fri, 22 Jul 2016 09:04:35 GMT

Never say never to anything regarding age. I've diagnosed Addison's disease in a 5 month old dog and diabetes in a 6 month old cat.

RE: Ever seen a mast cell tumour in an 8 month old dog?

nikki — Thu, 21 Jul 2016 22:11:07 GMT

My own Boxer had an Intermediate grade MCT aged 15months. Back leg just below her hock so relatively narrow margins taken. She's 4.5yrs old now and not had any others so far.

RE: Ever seen a mast cell tumour in an 8 month old dog?

Clive Ansell — Thu, 21 Jul 2016 19:32:10 GMT

[quote user="Robin Grimmer"]That's a good example where an FNA would have been really useful. [/quote]

No way FNA

This was a particularly boisterous and brainless boxer puppy, GA or hefty sedation would have been needed for a FNA, in which case given the lesion was about 5mm it was better just to excise with good margins + histopath = job done.

If a FNA could have been obtained conscious, then yes I agree.

RE: Ever seen a mast cell tumour in an 8 month old dog?

Kara Gibson — Thu, 21 Jul 2016 18:37:41 GMT

It appears well differentiated on the FNA so hoping will act in a relatively benign fashion but just deciding how aggressive my surgery needs to be. I also though was a histiocytoma initially but FNA yesterday was sure there were loads of mast cells and lab has confirmed.

I'm guessing this dog will be prone to de novo lesions in the future as well.

RE: Ever seen a mast cell tumour in an 8 month old dog?

Robin Grimmer — Thu, 21 Jul 2016 18:19:05 GMT

[quote user="Clive Ansell"]

I have. It was a 6 month boxer, came back as fairly benign and excision was curative. Lucky, because surgery was delayed as it was assumed to be a histiocyoma initially.

[/quote]

IIRC mast cell tumours in boxers tend to be more benign and have a better prognosis?

That's a good example where an FNA would have been really useful.

RE: Ever seen a mast cell tumour in an 8 month old dog?

Clive Ansell — Thu, 21 Jul 2016 18:03:59 GMT

I have. It was a 6 month boxer, came back as fairly benign and excision was curative. Lucky, because surgery was delayed as it was assumed to be a histiocyoma initially.

Another one was a 12 month old Doberman. This one was aggressively malignant, had spread to inguinal lymph nodes by the time of surgery, and the dog was dead within 3 months.