Different types of lung cancer

Types of lung cancer, also known as the bronchogenice carcinomas are generally classified into two categories: small cell lung cancer (CPCM) and cancer non-small cell lung (NSCLC). This classification is based on microscopic appearance of tumor cells themselves. These two types of cancers grow and spread in different ways and have different treatment options. Getting the type of pulmonary cancer is of particular importance.

Approximately 20% of lung cancer cases are detected CPCM; this form is very aggressive and has a very high growth rate. CPCM is closely related to smoking, only 1% of cases these tumors occurring in nonsmokers. CPCM rapidly develop metastases in other organs of the body. CPCM is found most often after already spread in the body.

NSCLC is the most common form of lung cancer, representing approximately 80% of all lung cancer cases. For his type of NSCLC cancer can be divided into three main types, depending on the type of cells comprising the tumor formation. There are the following types:

-Adenocarcinomas: is the most common type of NSCLC - up to 50% of cases. This type of cancer occurs in both smokers and people who have this defect. Most adenocarcinomas occur in peripheral areas outside the lungs. Bronchioloalveolar carcinoma is a subtype of adenocarcinoma that frequently develops in several areas of the lungs and spreads along the alveolar walls.

Squamous-cell carcinomas were more frequent than adenocarcinomas previously, currently, they account for approximately 30% of NSCLC. May be known as epidermoid carcinoma, this type of cancer (squamous cell) occurs most frequently in the bronchi.

Large-cell carcinomas, sometimes referred to as undifferentiated carcinomas, are the common type of NSCLC.

-Mixtures of different types of NSCLC are also seen.

Other cancers can occur in the lungs, these types are much less common than NSCLC and CPCM and together contain only 5% -10% of cases of lung cancer:

There are bronchial carcinoid, (maximum 5% of cases). These tumors are generally small (3-4 cm or less) and occur most frequently in people under 40 years. Not related to smoking. Carcinoidele generally grow and spread more slowly than other types of tumors. If they are detected in time can be solved by surgery.
Various other types of cancer can be used as vehicle flow of blood or lymphatic system to develop metastases in the lungs. Metastatic tumors are often multiple, scattered throughout the lung. They generally focus to the periphery and are now less in the center.

To be continued


Click here for more info

About brain cancer

Brain cancer is a disease of the brain cancer cells (malignant) appear in brain tissue. Cancer cells grow to form a mass of cancerous tissue (tumor) that interferes with brain functions such as muscle control, sensation, memory, and other normal body functions. Tumors composed of cancer cells are called malignant tumors, and those composed of non-cancerous cells are called benign tumors. Cancer cells that develop in brain tissue are called primary brain tumors while the tumor that spread from other organs and affects the brain are called metastases brain tumors.

The statistics suggest that this type of cancer occurs rarely and is likely to grow to approximately 22,000 people in 2009, with about 13,000 deaths – it is estimated by the National Cancer Institute (NCI).

Not all brain tumors are the same, even if they come from the same type of brain tissue. Tumors can be distinguished in degree depending on how the tumor cells appear under a microscope. There is a class division, depending on cancer cell growth rate. NCI lists the following classes of tumors:

-Grade I: the tissue is benign. Cells look almost like normal cells, and growth is slow.
-Grade II: the tissue is malignant. Cells look less like normal cells than tumor cells in a Grade I.
-Grade-III malignant tissue has cells that look very different from normal cells. Abnormal cells are growing actively (anaplastic).
-Grade-IV malignant tissue has cells that look abnormal and most tend to grow rapidly.
The most common primary brain tumors are usually named after the type of tissue in the brain have developed. They are gliomas, meningiomas, pituitary adenomas, vestibular schwannomas, and neuroectodermal tumors (medulloblastomas). Gliomas have more subtypes that include astrocytomas, oligodendrogliomas, ependymomas, and choroid papillomas. If the tumor classes are coupled with tumor name, the name will give physicians a better understanding of the severity of brain cancer. For example, a grade III (anaplastic) glioma is an aggressive tumor, while an acoustic neuroma is a benign tumor grade I. However, even benign tumors can cause serious problems if the increase
large enough to cause increased intracranial pressure or vascular structures or obstruction of cerebrospinal fluid flow.

Can anyone cure cancer?

Read more articles