First, the general characteristics of the tumor
From the general perspective, a variety of tumor morphology, site of the tumor, tissue source, growth in different ways, can be expressed as nodular, lobulated, papillary, polypoid, cauliflower-shaped, grass-like, pouch like, ulcer-like and so on. General growth in the luminal surface of the skin and often to the surface of tumor processes, were papillary, polypoid or cauliflower-like and so on. Growth in the organs of tumor usually presents deep nodular, lobulated, or cystic. Differences in tumor size is big, can go to dozens of kilograms, small can be a few millimeters in diameter.
Second, the tumor atypia
Terms of histology and cytology from the tumor tissue compared with tissue origin, showed different degrees of difference, this difference is called atypia. The lower the degree of tumor differentiation, the more obvious atypia, the higher the degree of differentiation (close to the tissue of origin), the smaller atypia. Atypia is the difference between benign and malignant tumors of the main basis. Atypia of malignant tumors was specifically manifested in cell disorder, loss of normal levels and structures.
From the morphology and structure, the malignant cells were highly heterogeneous, so as to the performance of a representative nucleus, mainly in the nuclear volume increases, the size and shape of inconsistent, there may be dual-core, multi-core or nuclear deformities. Nuclear staining deepened, thickened nuclear membrane, nucleolus increased, increased, showing asymmetry, more polar, and so frustrated pathological mitosis. Cell size is also inconsistent, generally large than normal cells.
Third, the metabolism of tumor cells
Their characteristics and growth patterns to adapt the performance for the metabolism, therefore, the growth of tumor cells in the process to consume large amounts of nutrients. This is caused by advanced cancer patients with cachexia one of the reasons.
The characteristics of the tumor, four, tumor growth
The growth of the tumor often has extraversion, the formation of papillary, polypoid, cauliflower-like and other new creatures. It should be noted that the bottom of the exogenous growth of malignant tumors tend to have invasive growth.