ABSTRACT
Cancer is a disease
caused by uncontrolled growth of abnormal cells. The disease is capable of
affecting any part of the body such as the reproductive organs, respiratory
organs, digestive and excretory organs. It has no prediliction for race, age,
colour or status, as it affects children, infants and adults. This paper
discusses its causes, spreading and how it is formed. It also focuses on its
symptoms, treatment and how frequent it occurs. The aetiological agent of this
disease is the main focus for its prevention as some of the disease is
incurable.
INTRODUCTION
Cancer is a term used to
define the diseases with which abnormal cells have the ability to invade
tissues within the body and are spread through the blood stream and lymph
system (Parvesh, 2009).
They are characterized by
excessive, uncontrolled growth of abnormal cells, which invade and destroy the
other tissues of the body but certain types of cancer are more life-threatening
than others.
Cancer is one of the most
serious medical problems in developed nations. A tumor (Latin tumere; to
swell) is a growth or lump of tissue resulting from neoplasia, abnormal new
cell growth and reproduction due to loss of regulation. Tumor cells have
aberrant shapes and altered plasma membranes that may contain distinctive tumor
antigens. Their unregulated proliferation and loss of differentiation results
in invasive growth that forms unorganized cell masses (Flint et al 2004).
This reversion to a more primitive or less differentiated state is called anaplasia.
There are two major types of tumor with respect to their overall form or growth
pattern. If the tumor cells remain in place to form a compact mass, the tumor
is benign. In contrast, cells from malignant or cancerous tumors can actively
spread throughout the body in a process known as metastasis, often by floating
in the blood and establishing secondary tumors.
Show your interest in this project by sending a mail to cdablog2013@gmail.com. We will promptly reply you and direct you on how to have the full package.
Thanks.
0 comments:
Post a Comment