Hello Redelle, I agree with kkrista about tumours in general. As to mammary tumours, however, there are more possibilities. These tumours are often seen in bitches which have not been spayed and begin as small nodular lumps varying in size from a pea to a walnut. At first benign, they have a tendency to become malignant as they develop. Treatment is normally surgical but the following homeopathic remedies may keep them in check in the early stages (when they are begining to develop).

1) Phytolacca 30C. Has a very important action on the mammary tissue and will prove useful in reducing the size and hardness of the growth;
2) Conium 30C. Useful when there are also swellings of lymph glands and signs of muscular weakness. More suitable for the older dog.
3) Iodum 30C. Is indicated when tumours are mainly superficial together with shrinking of mammary tissue. The dog most suited to this remedy may be thin with a dry shrivelled-looking coat and having an enormous, even voracious appetite. The superficial lymph glands are hard and small.
4) Bromium 30C. The left side of the mammary area is more affected when this remedy is indicated. There are accompanying respiratory symptoms such as coughing and nasal discharge.
5) Plumbum iodatum 30C. May be needed when there are attendant symptoms of paresis (partial paralysis) or incipient (commencing/beginning) paralysis. In this case the glands are usually stone hard and constipation is a constant feature.
6) Scrophularia nodosa 30C. This remedy has a beneficial effect on the glandular system generally and has given good results in helping to disperse small nodular growths.
7) Carcinosin 200C. This is the carcinoma (cancer) nosode and should be given as an additional remedy ! A single dose should suffice when combined with the appropriate remedy. Kind regards from the Netherlands !