There are four types of cancer types, such as carcinomas, sarcomas, leukemias, and lymphomas. Each kind has its own characteristic features by its origin, growth, and biology. According to the type of speed of development cancers are classified. Cancer is examined under a visual examination under the microscope, after a piece of tumor is surgically removed. This visual examination of cancer is called biopsy. By doing the biopsy exam, the characteristic feature and the 'look' of the cancer can be understood before starting the type of treatment it is required. As per a biopsy exam, a physician can determine three characters of what kind of it, such as whether the cancer is high-grade or low-grade and whether it is well-differentiated or undifferentiated variety.
A high-grade tumor is one kind, which is forceful one and these tumors are defient in development, but growing very swiftly. A low-grade tumor is opposite in nature to the high-grade tumors. These are fully developed in nature and also differentiated enough, but growing slowly comparing to the other. To give
prognosis about these tumor types, grading of the cancer should be performed.
We should know about what is a well-differentiated cancer and what is an undifferentiated cancer. When performing a visual examination under a microscope, the tester can feel that the pattern of cancer cells as usual and as like they arise from normal cancer cells. This type of tumors are well-differentiated kind. An undifferentiated cancer is one in which the cancer cells look not well developed. The cells are poorly differentiated in this kind and develop faster than well-differentiated tumors and the growth is very forceful one.
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