Difference between benign and malignant tumors, according to the severity of different hazards on the human body, can be divided into benign and malignant tumors. Identification of benign and malignant tumors is mainly based on cell differentiation status, in addition, whether the transfer, is also important to determine whether the basis of recurrence.
1. benign : benign tumors usually grow slowly, showing expansion of expansion, clear boundary, often coated; tumor differentiation and good color and texture close to the corresponding normal tissue, tissue morphology and cell shape variation small, mitotic difficult to see, organelles, membrane structure, cell mutation is not connected; generally do not relapse or recurrence of only a few, not to transfer, usually good prognosis.
2. Malignancies: malignant tumor usually grows rapidly, showing invasive growth, can destroy surrounding tissue, no capsule or pseudocapsule only; poor tumor differentiation, tissue and cell morphology falls far short of its corresponding normal tissue, showing abnormal sex, loss of alignment or polar disorder; irregular nuclei, often with different degrees of stained nucleoli increased increased mitotic increase, and the emergence of pathological mitotic; tumor often seen secondary changes, such as bleeding , necrosis, cystic degeneration, infection and so on. There are different degrees of ultrastructural changes. Abnormal metabolism of tumor cells, nucleic acid metabolism, enzyme spectrum changes, cells have significant genetic change. Wide range of tumor invasion, often recurrent, easy transfer of life-threatening.
Difference between benign and malignant tumors, 3. Borderline tumors: benign and malignant tumors is not never ran between the lines, also showed the evolution of benign to malignant progressive, so there are some objective of the intermediate between benign and malignant tumors, the critical tumors or borderline tumors. In addition, the subjective is difficult to distinguish benign and malignant tumors also called borderline tumors.
- does nucleoli increase in malignant tissue