Cancer is one of the deadly diseases in the world today. Cancer is caused because of some genetic factors and/or environmental factors and/or today’s modern lifestyle. Cancer has become the primary reason of death in developed countries. The most effective way to reduce cancer death is to detect it earlier. The earlier detection of cancer is not easier process but if it is detected, it is curable. Many works have been done in predicting cancer; different data mining approaches and algorithms were adopted by different people. Each work has some limitations such as lack of intelligent prediction, and inefficient in structure that motivated to take up this problem and to implement the Data mining based cancer prediction System (DMBCPS). We have proposed the cancer prediction system based on data mining. This system estimates the risk of the breast, skin, and lung cancers. This system is validated by comparing its predicted results with patient’s prior medical information and it was analyzed by using weka system. The main aim of this model is to provide the earlier warning to the users, and it is also cost efficient to the user.

ABSTRACT: Cancer is one of the major problem today, diagnosing cancer in earlier stage is still challenging for doctors. Breast cancer is one of the major death causing diseases of the women today all over the world. Every year more than million women are diagnosed with breast cancer worldwide over half of them will die because of the late diagnosing of the disease. So many researches have undergone for detecting the cancer based on data mining technology each approach has its own limitations. This makes us to take up this problem and to implement the Data mining based cancer prediction System (DMBCPS). We have proposed this cancer prediction system based on data mining technology. This system estimates the risk of the breast cancer in the earlier stage. This system is validated by comparing its predicted results with patient’s prior medical information and it was analyzed by using weka system. The main aim of this model is to provide the earlier warning to the users, and it is also cost efficient to the user. INTRODUCTION: The body is made up of trillions of living cells. Normal body cells grow, divide into new cells, and die in an orderly way. Cancer begins when cells in a part of the body start to grow out of control. Cancer cell growth is different from normal cell growth. Instead of dying, cancer cells keep on growing and form new cancer cells. Breast cancer is a malignant tumor that starts in the cells of the breast. Breast cancer is characterised by the uncontrolled growth of abnormal cells in the milk producing glands of the breast. There is no sure way to prevent from the breast cancer. But there are things all women can do that