LUNG CANCER

Lung Cancer

ABSTRACT

In this study we try to explore the concept of “lung cancer” in a holistic context. The main focus of the research is on “lung cancer” and its relation with “humans”. The research also analyzes many aspects of “lung cancer” and tries to gauge its effect on “humans”. Finally the research describes various factors which are responsible for “lung cancer” and tries to describe the overall effect of “lung cancer” on “humans”.

TABLE OF CONTENTS

ABSTRACTii

Introduction1

Lung Cancer1

Types of Lung cancer2

Small Cell Carcinoma2

Squamous Cell Carcinoma2

Adenocarcinoma3

The Large Cell Carcinoma3

Symptoms of lung cancer3

Cough3

Hemoptysis3

Chest pain3

Shortness of breath4

Treatment for lung cancer4

Surgical treatment4

Radiotherapy4

Chemotherapy5

What causes Lung Cancer?5

Smoking5

Exposure to heavy metals6

Deficiency or excess of vitamins6

Air pollution6

Asbestos and lung cancer6

Pesticides and lung cancer6

Prevention of Lung Cancer7

Conclusion7

REFERENCES9

LUNG CANCER

Introduction

Lungs are a very important part of the human body which supply oxygen to the human body and discharge carbon dioxide out from our body, which is a waste product that is produced by the body during the process. Meanwhile, the bronchi, in the lungs, are tubes by which air comes from the mouth to the lungs. These bronchi are further divided into many other smaller tubes, which are called bronchioles and alveoli. The combination of these tubes, form a way, through which the exchange of oxygen and carbon dioxide occurs between venous blood gases. Lung cancer is caused by the excessive growth of cancerous cells in the human lungs, and if this cancer is not diagnosed at an early stage, it could move to other parts of the human body (Thun 2008).

A majority of forms of lung cancer could be found in the lung cells; however, lung cancer could get spread, i.e. metastasized, from the lung from other parts of the human body. Most people know that smoking cigarettes cause lung cancer, but many do not know about the other leading causes that contribute to lung cancer. In this research report, we will shed light on the different factors that cause lung cancer in humans.

Lung Cancer

According to Stewart (2003), lung cancer usually begins to form in the mid-fifties or sixties. Smoking is responsible for 80% to 90% of cases of lung cancer. This cancer is particularly threatening because it can easily spread to the rest of the body than other types of cancer.

Types of Lung cancer

Springer (2009) described that there are various different types of lung cancer. Therefore, it is very important to make a distinction between different types of cancers. Within the types of lung cancers, examination of cancer cells (pathology) distinguishes:

Squamous cell cancers (35-40%);

Adenocarcinoma (25-35%);

The large cell carcinoma (10-15%);

The small cell carcinomas (20-25%).

Small Cell Carcinoma

The small cell lung carcinomas are cancers lung that appear in the smoker, both in the elderly than in young subjects. They are most often hilar or mediastinal seat-pulmonary, more rarely, they may present as a peripheral tumor, isolated (less than 10% of cases) (Rosell 2009).

Squamous Cell Carcinoma

This type of lung cancer forms of 25 to 30% of total patients of lung cancer. This type is usually found near the bronchi, into ...