“For many types of cancer, it is easier to treat and cure the cancer if it is found early. There are many different types of cancer, but most cancers begin with abnormal cells growing out of control, forming a lump that’s called a tumor. The tumor can continue to grow until the cancer begins to spread to other parts of the body. If the tumor is found when it is still very small, curing the cancer can be easy. However, the longer the tumor goes unnoticed, the greater the chance that the cancer has spread. This makes treatment more difficult.” (FamilyDoctor.org)
Cancers for which there is an early detection mechanism, if properly followed, the survival rate can be as good as 95%.
Found a couple of Indian cancer sites as well:
Do have a look and get the necessary tests done. The likelihood of a certain type of cancer would depend on your race, sex, etc., so do keep those factors in mind when you get the tests done.