Cancer, commonly referred to as malignant tumors in everyday language, is generally known to the public simply as cancer—for example, lung cancer, liver cancer, colon cancer, etc. It specifically refers to malignant tumors that occur in epithelial tissue, which we call cancer. Lymphoma, on the other hand, refers to malignant tumors that occur in lymph nodes, or in extranodal organs or tissues, which we call lymphoma. There are also malignant tumors that occur in mesenchymal tissue, known as sarcomas. In fact, lymphoma is also a type of malignant tumor, so people commonly refer to it as lymphatic cancer. Therefore, lymphoma and lymphatic cancer are essentially the same disease, with lymphatic cancer specifically referring to lymphoma.