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Tumours - Online Term Paper

Tumours

A tumour is a mass of new tissue growth that does not react to
normal controls or the organizing influence of other tissues, and it has no
useful function in the body. This applies to both types of ,
malignant and benign. Malignant, also known as, cancerous , are
additionally defined by their invasion of local tissue and their ability to
spread to other parts of the body.

Benign Tumours

A benign tumour which is not cancerous, is less serious than
malignant tumours because they do not spread to other parts of the body,
but they may cause damage by local growth and pressure on other structures,
producing serious complications such as bleeding. Benign tumours generally
grow ...

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other organs, contain an inner core with high
pressure zones that compress and collapse blood vessels, often preventing
the penetration of blood-borne cancer treatments. It spreads to distant
sites by the breaking off of malignant cells, which move through the blood
and lymphatic systems, attach themselves, and begin to grow as new colonies.
Malignant tumours are diagnosed by examination of their vascularity,
shapes, forms of cells division, and differentiation. More than a hundred
different types have been identified in humans. In general, those derived
from epithelial tissue are carcinomas, and those from connective tissue are
sarcomas.
The most common form of malignant tumour of the respiratory tract
is lung cancer, which began increasing in frequency at an alarming rate
about 1940. In 1980 it was the leading cause of cancer deaths in men and
is also rapidly increasing in woman. It is attributed to cigarette smoking
and environmental pollution: cancer of the lung ...

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Tumours. (2003, December 31). Retrieved May 30, 2025, from http://www.essayworld.com/essays/Tumours/768

"Tumours." Essayworld.com. Essayworld.com, 31 Dec. 2003. Web. 30 May. 2025. <http://www.essayworld.com/essays/Tumours/768>

"Tumours." Essayworld.com. December 31, 2003. Accessed May 30, 2025. http://www.essayworld.com/essays/Tumours/768.

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PAPER DETAILS

Added: 12/31/2003 08:48:27 PM
Category: Health & Medicine
Type: Premium Paper
Words: 659
Pages: 3

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