Types of Lung Cancer
Non Small Cell Lung Cancer
is more common than small cell lung cancer accounting for approximately 85% of
all cases of lung cancer. Non Small Cell Lung Cancer generally
grows and spreads more slowly than Small Cell Lung Cancer.
There are three main types of non-small cell lung cancer. They
are named for the type of cells in which the cancer develops:
squamous cell carcinoma (also called epidermoid carcinoma),
adenocarcinoma, and large cell carcinoma.
Adenocarcinoma: Usually beginning in the mucous glands, adenocarcinoma is the
most frequently diagnosed type of lung tumor, accounting
for forty percent of all cases. Women are more likely to
develop adenocarcinoma than any other Non Small Cell Lung
Cancer.
Squamous Cell Carcinoma: Squamous cell
carcinoma causes 30 to 35 percent of all cases. Slow growing,
squamous cell carcinoma usually begins in the bronchial tubes,
and diseased nodules tend to be clumped together.
Large Cell Carcinoma: The least common
form of Non Small Cell Lung Cancer, large cell carcinoma
occurs in approximately five to fifteen percent of all cases.
Tumors may develop in isolation, or in masses. The prognosis
is worse than for squamous carcinomas, and tumors tend to
be large at the time of diagnosis.
Undifferentiated: The variety of Non
Small Cell Lung Cancer cannot be determined. As Non Small
Cell Lung Cancer classifications are all treated in much
the same way, an undifferentiated diagnosis does not usually
affect treatment outcome.
Cigarettes, radon and asbestos exposure
are the leading causes of Non Small Cell Lung Cancer. Surgical
removal of the diseased tissue is the usual treatment option,
although radiation therapy and chemotherapy may also be used,
depending on tumor growth and spread.
Notice
the abundance of pink cell contents (cytoplasm) around
the round blue nuclei. This makes the cells "Large."
Non-small cell lung cancer |
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