https://www.vetsurgeon.org/f/clinical-questions/25203/mammary-discharge-post-spay I play badminton every week, and I was asked by a fellow player - he owns an 18 month old St Bernard. She was spayed 6 weeks ago, and a few days after the op there was swelling around one mammary gland and dark brown discharge from one nipple. It wasen-USTelligent Community 10https://www.vetsurgeon.org/thread/170527?ContentTypeID=1Thu, 15 Dec 2016 11:26:44 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:45cb0e03-6f9d-4b21-9281-6540fb6abbdcRob Davis<p>Probably not helpful, but.... If this is not a client of yours, then I would avoid offering any advice. If they wish to come and see you for a second opinion then it can be done properly by contacting the normal practice and obtaining full history etc and all being above board.</p> <p>If I&#39;ve got the wrong end of the stick and it&#39;s actually your patient: if it&#39;s not currently bothering the dog I would probably give it some time and see if it resolves on it&#39;s own. If it&#39;s not resolving then cut it out with histopath.</p><div style="clear:both;"></div>