This uncontrolled growth causes the presence of a mass, a tumor or neoplasms , which compete with normal tissues and cells. Although it is true that they sometimes appear as a result of a certain stimulation, growth continues despite this ceasing. These can arise in any organ and practically in any person, regardless of their condition or age.
In the human body we have tissues with a specific function within an organ and others that fulfill rather a support function in order to allow its functioning. In neoplasia they are the parenchyma , basically they are a set of cells with their own function, they are the last term to those that develop and reproduce, while the stroma or set of tissues act as a framework for it (primarily connective tissue and blood vessels ) helps to generate this tumor development.
The presence of a neoplasm or a tumor can be asymptomatic (especially if it is benign), but in others it can generate physiological, physical and even behavioral changes (such as brain tumors) that can be linked to its existence. The type of symptom may vary according to its location and the type of neoplasm being treated.
It should be noted that it must be taken into account that despite the presence of symptoms that may be possible indicators, it does not necessarily imply the existence of the neoplasm but may be due to a wide variety of conditions (not all of them are necessarily clinical), which in turn fact in many cases are more likely.
We can find different types of neoplasms, depending on the type of tissue affected, the presence or absence of infiltration. However, the most common are those that take into account its degree of and the type of tissue grows.
Types of neoplasms
- Benign neoplasms
Benign neoplasms are considered to be any regular, localized neoplasm that in turn is self-limited or encapsulated, being its infiltrative behavior (that is, it does not occupy the surrounding tissue. Its development is relatively slow, being the cells that are part of the tumor similar to that of neighboring fabrics and being discreetly differentiated.
The existence of some type of benign tumor is very common in the course of life, being frequent the bolides, adenomas, cysts, fibromas or papillomas among many others.
- Malignant neoplasms
They are those that are generated by infiltrative tumors, which usually disperse and invade the surrounding structures and are not limited. These are rapid growths that affect and invade neighboring tissues, limiting themselves and producing metastases.
As a consequence, differentiation of the cell wall is lost , as the limits of the tumor mass are not delimited. Depending on the evolution of the fabric, it looks less and less like the original structure. Here we refer to what is commonly known as cancer. If it is not treated in advance, it ends up causing the death of the patient in periods of time that vary greatly, frequently generating bleeding and tissue death.
In addition, it can cause recurrences, that is, if they are not completely eliminated, they can develop again despite being removed. The degree of infiltration, as well as its rate of expansion and growth and the extent and degree of differentiation of its cells can be highly variable. In this way we can find various sub-classifications.
Classifications according to the type of neoplasm and Examples
Other classifications may be based on the type of tissue that appears in the neoplasm. The following groups stand out here:
- Connective tissue tumors: this class of tumors arise in adipose tissue, cartilage, fibrous tissue or bone. For example: osteosarcoma or fibroma.
- Tumors derived from blood cells : an uncontrolled proliferation of blood cells, the immune system or lymphatics is generated. The most common type occurs in diseases such as leukemia.
- Tumors derived from the endothelium : these are neoplasms or tumors that are generated in blood vessels, in the meninges or lymphatics. Such as meningioma or hemangioma.