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Dr. Kara
Dr. Kara, Board Certified Veterinarian
Category: Vet
Satisfied Customers: 15929
Experience:  Over 20 years of experience as a veterinarian.
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my boxer has an undiagnosed tumour in his bowel/prostate area

Resolved Question:

my boxer has an undiagnosed tumour in his bowel/prostate area - it was discovered by my vet in September last year, it is very large now and I have tried everything to slow down the growth of the tumour, he is very thin now and this week just doesn't seem to want to do anything but lie in his bed. The vet said he may have had a small stroke. do you think this is what is wrong\?
Submitted: 3 years ago.
Category: Vet
Expert:  Dr. Kara replied 3 years ago.
Hello, my name isXXXXX and I have over 20 years of experience as a veterinarian. I'd like to help with your concerns about Gus, his large abdominal tumor, weight loss, and now this week severe lethargy.

Unfortunately as tumors grow they take more then their share of energy because of their high metabolic rate, and they can spread to other organs which interferes with proper organ function.
If the tumor is taking a disproportionate amount of energy then he may be weak from that. It would cause him to lose muscle mass and body mass.
If the tumor metastasized to his organs this can lead to decreased ability to clear metabolic wastes, if the kidneys and liver are affected by tumor spread, which could make him very weak and lethargic.
If the tumor spreads to the brain then mental status can change.
If the tumor spreads to the lungs then oxygen exchange can be affected and poor blood oxygen levels can lead to lethargy.
If the tumor spreads to the bone marrow or spleen red blood cell numbers can decrease, leading to anemia, weakness and lethargy.

Cancer certainly cause blood clots to form due to abnormal blood vessels in the tumor, and if the clots break off and spread to the brain and cause stroke symptoms. I would expect changes in coordination and possibly mental status with a stroke.

I'm sorry to hear that Gus has a tumor and that he is now doing poorly. I hope that my write up helps you understand what may be happening with him now. Please let me know if you have any further questions.
Dr. Kara, Board Certified Veterinarian
Category: Vet
Satisfied Customers: 15929
Experience: Over 20 years of experience as a veterinarian.
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