Small Mammals Q&A 03
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A two-year-old female intact pet rat develops these two large tumors on her abdomen:
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What is your diagnosis and prognosis? |
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How does this condition in rats compare with that in mice and guinea pigs? | In mice, mammary tumors are frequently malignant, invasive and difficult to remove. They are associated with infection by the mouse mammary tumor virus.
In guinea pigs, about 70% of the mammary gland tumors are benign fibroadenomas and 30% are mammary adenocarcinomas. |
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What would you recommend to prevent the occurrence of these tumours in pet rats? | Ovariohysterectomy at a young age may decrease the incidence of mammary gland tumours and can be recommended to owners of female pet rats.
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