The cancer symptoms

 In medicine, cancer refers to malignant tumors originating from epithelial tissues, and is the most common type of malignant tumors. 

    Correspondingly, malignant tumors originating from mesenchymal tissues are collectively called sarcomas. There are a few malignant tumors that are not named according to the above principles, such as Wilms tumor, malignant teratoma and so on. 

    Generally speaking, "cancer" generally refers to all malignant tumors.

    If cancer can be detected early, the cure rate can reach more than 65%. To achieve early detection, it is necessary to understand which are the early signs of common cancers. So what are the symptoms of early cancer?