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Malignant hypertension is a serious condition caused by very high blood pressure. It can quickly cause serious damage to eyes, kidneys and brain. Some of the changes can be reversed by treatment but some permanent damage may occur. Malignant means bad or evil.
Both malignant and benign brain tumors can cause the problem of increased intracranial pressure and its consequences. Malignant brain tumors usually cause such problems more aggressively and quickly than do benign brain tumors. Almost all tumors that begin in the brain do not spread to other parts of the body. Another major difference between benign and malignant tumors is that while malignant tumors can invade the brain tissues and grow rapidly, benign tumors usually push on, rather than invade, adjacent tissues.