Cancer is a life-taking disease typically characterized by uncontrollable growth of cells. There are more than 100 types of identified cancers and all these types are classified according to the type of cells that are affected initially.
Cancer is a life-taking disease typically characterized by uncontrollable growth of cells. There are more than 100 types of identified cancers and all these types are classified according to the type of cells that are affected initially.
In simple terms, cancer is a group of more than 100 diseases that develop across time and involve the uncontrolled division of the body’s cells. Cancers arise when critical genes are mutated, causing unregulated proliferation of cells. These rapidly dividing cells pile up on top of each other to forming a lesion or a lump in some part of the body. This mass of abnormal cells is tumour. When it grows in confined area we call is a benign tumour and when it develops capability of invading surrounding tissues it becomes a malignant tumour. Cellular condition where tumour cells invade neighboring tissues and spread via body fluids to other parts of the body is called cancer.
Berks county advanced materials 2011 12ruaripadraig
These slides detail the history and rationale for the development of the Berks County Advanced Materials/Diversified Manufacturing Industry Partnership
In simple terms, cancer is a group of more than 100 diseases that develop across time and involve the uncontrolled division of the body’s cells. Cancers arise when critical genes are mutated, causing unregulated proliferation of cells. These rapidly dividing cells pile up on top of each other to forming a lesion or a lump in some part of the body. This mass of abnormal cells is tumour. When it grows in confined area we call is a benign tumour and when it develops capability of invading surrounding tissues it becomes a malignant tumour. Cellular condition where tumour cells invade neighboring tissues and spread via body fluids to other parts of the body is called cancer.
Berks county advanced materials 2011 12ruaripadraig
These slides detail the history and rationale for the development of the Berks County Advanced Materials/Diversified Manufacturing Industry Partnership
Stanley is a global organization supplying hardware and tools for the architectural,
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Cancer and its types, all tumours are not cancer, cancer, diagnosis of cancer, how cancer differ, how cancer spread, how cancer start, how normal cells act
LECTURE 11 CANCER DRUGS, IMMUNOCHEMISTRY and CHEMOCHEMISTRY.docxmanningchassidy
LECTURE 11 CANCER: DRUGS, IMMUNOCHEMISTRY and CHEMOCHEMISTRY
A dividing breast cancer cell.
Cancer is the name given to a collection of related diseases. In all types of cancer, some of the body’s cells begin to divide without stopping and spread into surrounding tissues.
Cancer can start almost anywhere in the human body, which is made up of trillions of cells. Normally, human cells grow and divide to form new cells as the body needs them. When cells grow old or become damaged, they die, and new cells take their place.
When cancer develops, this orderly process breaks down. As cells become more and more abnormal, old or damaged cells survive when they should die, and new cells form when they are not needed. These extra cells can divide without stopping and may form growths called tumors.
Many cancers form solid tumors, which are masses of tissue. Cancers of the blood, such as leukemia, generally do not form solid tumors.
Cancerous tumors are malignant, which means they can spread into, or invade, nearby tissues. In addition, as these tumors grow, some cancer cells can break off and travel to distant places in the body through the blood or the lymph system and form new tumors far from the original tumor.
Unlike malignant tumors, benign tumors do not spread into, or invade, nearby tissues. Benign tumors can sometimes be quite large, however. When removed, they usually don’t grow back, whereas malignant tumors sometimes do. Unlike most benign tumors elsewhere in the body, benign brain tumors can be life threatening.
What are the differences between cancer cells and normal cells?
Cancer cells differ from normal cells in many ways that allow them to grow out of control and become invasive. One important difference is that cancer cells are less specialized than normal cells. That is, whereas normal cells mature into very distinct cell types with specific functions, cancer cells do not. This is one reason that, unlike normal cells, cancer cells continue to divide without stopping.
In addition, cancer cells are able to ignore signals that normally tell cells to stop dividing or that begin a process known as programmed cell death, or apoptosis, which the body uses to get rid of unneeded cells.
Cancer cells may be able to influence the normal cells, molecules, and blood vessels that surround and feed a tumor, an area known as the microenvironment. For instance, cancer cells can induce nearby normal cells to form blood vessels that supply tumors with oxygen and nutrients, which they need to grow. These blood vessels also remove waste products from tumors.
Cancer cells are also often able to evade the immune system, a network of organs, tissues, and specialized cells that protects the body from infections and other conditions. Although the immune system normally removes damaged or abnormal cells from the body, some cancer cells are able to “hide” from the immune system.
Tumors can also use the immune system to stay alive and grow. For example, with.
Medical histories remain an important screening tool: the character of the complaints and nonspecific symptoms (such as fatigue, weight loss,[3] unexplained anemia,[4] fever of unknown origin, paraneoplastic phenomena and other signs) may warrant further investigation for malignancy. Occasionally, a physical examination may find the location of a malignancy.
According to the National Cancer Institute, a tumor is an unusual tissue mass that results from cell division beyond what is naturally expected. Tumors may also develop when divided cells do not die as due. Tumors sometimes look like cancers. However, not all tumors are cancerous.
The human body is made up of cells that grow, multiply and take the place of each other. As new cells appear, old cells disappear. So cancers are formed when the body starts to produce cells that it does not need. When these cells become too much, swellings and tumors begin to develop.
Different types of tumors might develop in the human body. There are three broad categories of tumors: malignant, premalignant, and benign tumors. Malignant tumors are cancerous, and when not adequately treated, they can spread to other parts of the body. Benign tumors, on the other hand, are non-cancerous cells.
Benign tumors, otherwise called non-cancerous tumors, pose little to no threat to a person's health. Unlike malignant tumors, they do not usually spread to other body parts. It has been noted that most benign tumors do not need to be treated as long as they are not painfully pressing against other body parts.
Different types of benign tumors can grow in the human body. One of them is benign bone tumors like osteomas. While osteomas are not cancerous, they might result in a severe kind of pain if it does not receive instant medical attention. Similarly, brain tumors like meningiomas and schwannomas are also examples of benign tumors. Meninges are tissues that cover the brain and the spinal cord, and they are also hosted.
On the other hand, malignant tumors, otherwise known as cancerous tumors, tend to spread to other tissues or organs. For instance, they could spread to other body parts like organs and tissues. The newly formed cells are known as metastases. While most people tend to remove malignant tumors, they might reappear through a process known as cancer recurrence.
There are different types of malignant tumors. Osteosarcoma and chordomas are two types of m, malignant tumors that grow in the brain. On the other hand, the various organs in the body might develop tumors like pancreatic cancer and lung cancer. Similarly, the skin might also develop malignant cancers like squamous cell carcinoma.
Premalignant tumors are also a type of tumor. Unlike both tumors mentioned earlier, this kind of tumor can either be malignant or none malignant. So its malignancy is based on whether it is treated as soon as possible. Premalignant tumors need to be closely m monitored by a doctor, or they might become cancerous.
An example of a premalignant tumor is actinic keratosis or solar keratosis. Actinic keratosis leaves the skin with patches and scaly swellings. Excess sun exposure is one of the risk factors associated with arctic keratosis, and it affects people with a fairer skin than it does other skin types.
Cervical dysplasia is another premalignant tumor that might grow in the h
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ANTI CANCER DRUGS[ANTI-NEOPLASTIC DRUGS] MEDICINAL CHEMISTRY BY P. RAVISANKAR.Dr. Ravi Sankar
what is cancer?, History,Malignent tumor, non-malignent tumor(benign tumor),Largest tumor ever removed, tumour growth kinitics, doubling tume, angiogenesis, causes of cancer, drugs, treatment of cancer, classification of anti-cancer agents, mechanism of actions,alkylating agents,anti metabolites, vinka alkaloids, best ways to reducing cancer.
BY P. RAVISANKAR
VIGNAN PHARMACY COLLEGE
VADLAMUDI
GUNTUR
ANDHRA PRADESH
INDIA.
about tumors:
Epithelial tumors are a type of tumor that originates from cells in the epithelium, which is a tissue that lines the surfaces and cavities of the body, such as the skin, organs, and glands. Epithelial tumors are also known as epithelial cell tumors or epitheliomas.
The major categories of cancer and the best plan to save on their treatment c...PrudentRx Program
Your body cells grow and multiply in an orderly process, known as cell division, that results in the development of new cells that your body needs. Cancer is a disease in which some of the body cells grow abnormally and spread to other parts of the body. Cancer can start in any part of the body.
2. Cancer is a large group of disorders with different
symptoms
Almost all cancers have the same cause: cells multiplying
uncontrollably
The bad genes at the start of the problem may be
inherited, caused by known carcinogens or just by
ageing.
A cancerous cell divides to form two cells that contain
damaged genetic material . If these are left untreated the
cancerous cell will multiply uncontrollably.
Once you have cancer in one place it can travel to other
places in your body.
3. First carcinogens continually bombard cells and many eventually
affect genes on the chromosomes. Often new damage to the
oncogenes is limited and soon repaired.
Second damage to oncogenes and repair continue, but with time
or higher than normal exposure to carcinogens, some of the
oncogenes suffer permanent harm.
Eventually a number of oncogenes are permanetly altered. Key
cell functions are irreparably
affected and the cell tips over into cancerous mode.
Carcinogens -A substance capable of causing cancer in living
tissue
Oncogenes- A gene that in certain circumstances transforms a
cell into a tumor cell.
4. Cancer is a growth that damages surrounding tissues
and organs.
Non cancerous cells divide and replace at a controlled
rate. A cancerous tumor is a mass of abnormal cell that
divide extremely quickly and don’t carry out the
normal functions of their tissue.
These cells are often irregular in size and shape.
As these cells divide and multiply a tumor can
gradually enlarge.
5. It takes just one cell to undergo cancerous changes for
a tumor to form.
The cell divides into two cells which do the same and
so on. the total number of cancerous cells double every
division.
After 25-30 divisions there are around a billion cells
which then you can see a tumor forming.
6. Cancer can be spread by lymph and by blood
If the tumor is near a lymph vessel then eventually the
cancer cells will go through the vessel and reach the
lymph node. Once it reaches the lymph node it will for
a tumor.
If a cancer cell gets into the blood the cell will travel all
over to places that are reached by blood vessels. The
cancer cells will slowly go out of the vessels and form a
tumor.
7.
8. Bone Cancer Lung Cancer
Brain Cancer Cancer in children
Breast Cancer Skin Cancer
Anal Cancer Testicular Cancer
Eye Cancer Bladder Cancer
Leukemia Intestinal Cancer
9. Breast Cancer is a malignant tumor that starts in the
cells of the breast.
The disease usually occurs in women but sometimes it
may occur in men.
The female breast is made up of lobules, ducts, and
stroma
Most breast cancer start in the cell that lines the ducts
10.
11. leukemia starts in the soft part of the bone (the bone
marrow) so it spreads quickly to the blood and once
that happens it can spread to other parts of your body,
such as the lymph nodes, spleen, liver, as well as the
central part of your nervous system, and other organs.
Children and adults can get leukemia witch is a
complex daises with many types and subtypes.
Bone marrow is the soft spongy part of the part of the
bone and all these different blood cells are made in the
marrow
12. Anal cancer is a rare
disease that attacks the
anus.
The Anus is the bodies
opening to the lower
intestine.
The anal and its
surrounding are made up
of several different types of
cells were tumors can
begin to develop.
Not all anal tumors
develop in to cancer