Many lumps, cancerous or not, look similar to the naked eye. Your vet might be able to tell a little bit based on how it looks, how quickly it’s growing and where it is on the body. To find out exactly what it is, your vet might decide to take a sample.
- Benign lumps are not cancerous. They are an overgrowth of cells.
- They don’t spread around the body.
- They can sometimes cause problems when they get in the way of other body parts (e.g. a big benign lump next to a leg might get in the way and cause pain when your dog is walking).
- Malignant lumps are cancerous, they tend to spread around the body and grow more quickly than benign lumps.
You can read articles on the below to find out about specific types of lump.
- Skin lumps
- Mammary (breast tissue) tumours
- Testicular tumours
- Anal (bottom) tumours
- Brain tumours and tumours in the spine
- Tumours inside the abdomen (including spleen, liver, kidney, stomach, gut, ovary and womb tumours)
- Tumours inside the chest (including heart tumours, lung tumours and thyroid tumours)
- Bone tumours.