For brain tumors characterized by the peculiarity that they do not matter histologic type of tumor - malignant or benign, since they both have the same effect more on the brain itself - compression and displacement of its structures. Therefore, it is much more important is not the histological type of tumor and its anatomical location, as it is on what part and what part of the brain is compressed by tumor type depends on the treatment and prognosis.
According to the international classification of tumors of the CNS, is now distinguish the following histologic types:
Tumors of neuroepithelial tissue
Tumors of cranial and spinal nerves
Tumors of the meninges
Lymphoma and tumors of hematopoietic tissue
Tumors of germ cell
Cysts and tumor-like processes
Tumors located in the sella
Germination of tumor from surrounding tissues
Brain tumors can occur in different ways. It all depends on the rate of tumor growth and, of course, its anatomical location.
Among the main variants of the brain tumors are the following:
Tumoroznoe within the tumor. In this embodiment, the flow observed so-called focal symptoms, which is associated with compression of the swelling of certain parts of the brain. This type of flow is the most common tumors.
Epileptiform within the tumor. This option is shown, as a rule, convulsive syndrome. This is due to compression of the tumor, some parts of the brain. For vascular tumors. This variant is associated with bleeding (hemorrhage) into the tumor, with tumor manifestations resemble a stroke.
Inflammation within the tumor. In this embodiment, the clinical picture of the tumor resembles meningoencephalitis - inflammation of brain tissue and meninges.
Finally, the least likely to occur isolated intracranial hypertension. In this embodiment, the disease does not have any current symptoms of focal tumors.
What is a brain tumor
The tumor - a growth of tissue that is out of control. The tumors are different. Often you can hear a phrase such as "brain cancer", although this histological type of cancer such as cancer, can occur in the brain for the reason that cancer - a tumor of the epithelium. But the brain is not the epithelium.
All tumors are known to be divided into benign and malignant. Benign tumors are characterized by the fact that they do not germinate in the neighboring organs and tissues are not subject to the circulatory and lymphatic systems (ie, do not metastasize). For them, tend to slow flow and no collapse of the tumor itself.
Malignant tumors are characterized by a more aggressive course. They usually grow into adjacent organs and tissues, thereby destroying them. They are characterized by rapid growth, decay, and most importantly - metastasis and recurrence.
Metastasis - a process in which there is a spread of some cancer cells to distant areas of the body. They are spread through the blood and lymphatic system. At that time, as various malignant tumors in other organs can easily metastasize to the brain, it is worth noting that brain tumors rarely metastasize and move to other areas. This is a very important moment for science, since it allows to develop new treatment strategies.