: Cancer is basically abnormal cell division. It turns into a tumor. All cancers are tumors but not all tumors are cancers. Cancer can occur in all organs. Such as brain cancer , breast cancer , blood cancer , lung , liver , skin , breast , thyroid , prostate. If caught in the first stage, the patient can be completely cured by applying radiotherapy or chemotherapy. However, if caught in the last stage, the patient may not survive. The symptoms of each cancer are different.