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My dog has hemangiosarcoma but shows no symptoms. Is this normal?

Updated On September 23rd, 2025

Pet's info: Dog | Border Collie | Female | spayed | 12 years and 10 months old | 67 lbs

our dog diagnosed as having hemangiosarcoma 4 days ago. Dog has more energy now then 4 days ago, good appetite, goes for 1 mile walk. ? diagnosis?

1 Answer

Most Helpful Answer

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Answered By Destini R. Holloway, DVM

Veterinarian

Published on November 14th, 2016

Unfortunately hemangiosarcoma of the spleen does not present with any outward signs of illness in most cases. This is a disease process that will acutely (all of a sudden) cause illness and internal bleeding due to rupture of the cancerous mass. I am sorry your pet was diagnosed with this condition and it is great that Abby is otherwise healthy. Keeping her comfortable is whats best. I would also consider having the mass removed to prevent rupture and subsequent internal bleeding. Rupture of the mass can occur at any time.

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