Hello and thanks for researching your question...I am sorry that no one online earlier felt able to discuss this with you, and that you and your Dear Friend are having this difficult and distressing experience!
It is very hard to wait, but I am happy that she is doing well today.
Dogs can develop benign tumors in the spleen, and it is favorable that your veterinarian was not able to find any other lesions with the ultrasound exam and during the surgery. Dogs that have had benign splenic masses removed do very well, as long as they are protected from infection and illness.
It would also be a favorable sign if there were only one obvious mass on the spleen itself--malignant forms of cancer often produce several tumors by the time symptoms of bleeding are seen at home.Read an article about splenic masses by clicking here
Although there is no way to tell in this type of forum what type of tumor your pet had, in your place I would keep a hopeful attitude and focus on supporting her healing.
Dogs do not worry about how much time they have in the world, they want to feel comfortable and happy. She certainly senses your worry, and this can cause her anxiety.
If you need more support at this time, or need to discuss the biopsy report when it comes back, please "REPLY
Edited by Gen B. on 5/14/2010 at 1:09 PM EST