Let me introduced Blues, schnauzer miniature, almost 3 yo.
Our problems started about 4-5 months ago with diarrheas. At the begging it was quite rare but started to be more often and often. He was always quite a peaky eater with sensitive stomach so I did't worry too much as I thought maybe this particular kind of meat (he is on barf diet) does not suit him. But problem did not disappeared, he started to lost his weight with increased appetite. We made blood test:
other parameters in norms.
We tested his stool in general (+ especially giardia lamblia) - clear.
Ultrasound of the abdomen - clear.
Meanwhile we tested different kind of meats with no improvement.
Vet decided to try dry food and we've chosen Acana Singles (lamb).
But two day before changing from raw to dry, on Saturday (3.03.18) I've noticed a red bump on his belly. My first thought - something has bited him. It looked as on the first photo. We went to the vet on monday (5.03) and she asked to put a steroid on this, but after three days I've sent her message with photo and she decided not to use steroids anymore as there's no improvement and come to her. We have been today. Now it looks like on a second photo. Her suspicion is Histiocytoma or Mastocytoma. She took a few cells on a glass to see it under a microscope and we are going to cut it out in a week.
What do you thing? Any other suspicions? This red bump is ca 3-4mm above the skin, the hair and the epidermis has gone.