Cancer is defined as when there is an abnormal excessive development of any tissue. So does or will cancer affect the foot? Obviously it can, as the foot has all the same tissues as other parts of the body. Cancer in the foot is really unusual, however when it does happen it has the potential to be really serious since it is often missed or wrongly diagnosed as somethng not too severe. There's two types of cancer that are able to affect the foot. The first is where the cancer starts in the foot, so this could possibly be in the any tissue from the skin to the bone to joint or the tendons to the nerves or the blood vessels. As the foot is a weight-bearing area of the body and it has many things which could go wrong a very high index of suspicion is required to identify one of these primary cancers from what might be considered a typical and common foot condition. This is the reason the competence of a good knowledgeable clinician is necessary to deal with foot disorders and to rule out one of these more potentially critical conditions that are uncommon.
The other kind of cancer that can affect the foot is a metastasis or a spread of the cancer coming from another part of the body. This cancer may perhaps be already be clinically diagnosed and might spread to the foot where it creates pain in the foot. On the other hand the cancer may start growing in another area of the body and it is un-diagnosed there and it sends a metastasis or propagates to the foot to cause pain in the foot. This is very unusual however when it can occur it is quite serious because it typically implies that the first cancer is more developed. It also presents a diagnostic dilemma for the clinician that is seeking to identify the reason behind the pain in the foot. Again, a very high index of suspicion and instinct is required by the clinician to pick this up in the early stages. The earlier that these types of cancers are identified the better the outcome might be.