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Mammary Gland Enlargement in Cats



If the enlargement is due to high levels of progesterone, the mass will diminish as the levels fall at the end of the false pregnancy or gestation. To lower progesterone levels permanently, a hysterectomy may be considered if fertility is not an issue. If the enlargement is related to the use of prescription progestogens, the mass will diminish when the medication is withdrawn.


Enlargement that occurs after neutering will resolve itself spontaneously. If your cat is uncomfortable, your veterinarian may prescribe progesterone receptor blockers, or prolactin inhibitors (a peptide hormone that is primarily associated with lactation).


Living and Management


The likelihood of recurrence in cats that are left intact is unknown, as is any correlation with other abnormal conditions of the reproductive tract.



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