The tumor is an ancient disease that has been found on primitive people's bones. Since the written records, there is a description of the tumor. In the Yin Ruins unearthed the Oracle has "tumor" word. China's earliest medical book "Nei Jing", there are many similar records of the tumor, such as "accumulation" (which may include modern abdominal tumors such as liver cancer), "Ye Yu" (may contain modern esophageal cancer), " May contain modern breast cancer) and so on. "Cancer" was first seen in the Song Dynasty, "Wei Ji Bao book" (1171).
In the West, the word "Cancer" appears earlier than "Medicine". "Cancer" comes from "Crab", which has vaguely expressed the invasion and metastasis of cancer.
Tumor refers to the body in a variety of tumorigenic factors, the local tissue cell proliferation by the formation of new organisms, because the new organisms were mostly mass-like massive protrusions, also known as vegetation.
According to the new biological cell characteristics and the degree of harm to the body, the tumor is divided into benign tumors and malignant tumors two categories, benign tumors are no invasion and metastasis of the tumor, such as our common lipoma, fibroids , Often with a capsule or boundary clear, was expansion of growth, slow growth, tumor cell differentiation mature, less harmful to the body. And malignant tumors is that we often say that cancer, benign and malignant tumors is the most essential difference between invasive and metastatic. Compared with benign tumors, malignant tumors grow rapidly, are invasive growth, prone to bleeding, necrosis, ulcers, and often distant metastasis, resulting in human weight loss, weakness, anemia, loss of appetite, fever and severe organs Function damage, and ultimately cause the patient to die.
So, if the doctor said that someone is suffering from cancer, that is, patients with malignant tumors.
Cancer refers to the epithelial malignant tumor, is the most common type of malignant tumors, such as the formation of large intestine mucosal epithelial cancer called colorectal epithelial cancer, referred to as colorectal cancer. Formed by the skin epithelium called skin epithelial cancer, referred to as skin cancer and so on.
Corresponding, originated in the mesenchymal tissue of malignant tumors collectively referred to as sarcomas, such as liposarcoma, leiomyosarcoma and so on. A small number of malignant tumors are not named according to the above principles, such as nephroblastoma, malignant teratoma and so on. Generally speaking, "cancer" commonly refers to all malignant tumors.
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