Cancer can be treated by surgery, chemotherapy, radiation therapy, immunotherapy, monoclonal antibody therapy or other methods. The choice of therapy depends upon the location and grade of the tumor and the stage of the disease, as well as the general state of the patient (performance status). A number of experimental cancer treatments are also under development.
Complete removal of the cancer without damage to the rest of the body is the goal of treatment. Sometimes this can be accomplished by surgery, but the propensity of cancers to invade adjacent tissue or to spread to distant sites by microscopic metastasis often limits its effectiveness. The effectiveness of chemotherapy is often limited by toxicity to other tissues in the body. Radiation can also cause damage to normal tissue.
Because "cancer" refers to a class of diseases, it is unlikely that there will ever be a single "cure for cancer" any more than there will be a single treatment for all infectious diseases.
Surgery
In theory, cancers can be cured if entirely removed by surgery, but this is not always possible. When the cancer has metastasized to other sites in the body prior to surgery, complete surgical excision is usually impossible.
Examples of surgical procedures for cancer include mastectomy for breast cancer and prostatectomy for prostate cancer. The goal of the surgery can be either the removal of only the tumor, or the entire organ. A single cancer cell is invisible to the naked eye but can regrow into a new tumor, a process called recurrence. For this reason, the pathologist will examine the surgical specimen to determine if a margin of healthy tissue is present, thus decreasing the chance that microscopic cancer cells are left in the patient.
In addition to removal of the primary tumor, surgery is often necessary for staging, e.g. determining the extent of the disease and whether it has metastasized to regional lymph nodes. Staging is a major determinant of prognosis and of the need for adjuvant therapy.
Occasionally, surgery is necessary to control symptoms, such as spinal cord compression or bowel obstruction. This is referred to as palliative treatment.
Chemotherapy
Chemotherapy is the treatment of cancer with drugs ("anticancer drugs") that can destroy cancer cells. It interferes with cell division in various possible ways, e.g. with the duplication of DNA or the separation of newly formed chromosomes. Most forms of chemotherapy target all rapidly dividing cells and are not specific for cancer cells. Hence, chemotherapy has the potential to harm healthy tissue, especially those tissues that have a high replacement rate (e.g. intestinal lining). These cells usually repair themselves after chemotherapy.
Because some drugs work better together than alone, two or more drugs are often given at the same time. This is called "combination chemotherapy"; most chemotherapy regimens are given in a combination.
The treatment of some leukaemias and lymphomas requires the use of high-dose chemotherapy, and total body irradiation (TBI). This treatment ablates the bone marrow, and hence the body's ability to recover and repopulate the blood. For this reason, bone marrow, or peripheral blood stem cell harvesting is carried out before the ablative part of the therapy, to enable "rescue" after the treatment has been given. This is known as autologous transplantation. Alternatively, bone marrow may be transplanted from a matched unrelated donor (MUD).
2 comments:
There is a saying that stress actually contributes to cancer development. I think that if people learn proper stress management , then we can actually avoid Cancer. Now, if you already have it, it might be best to lessen the stress to not aggravate cancer cells. I found pzizz to be helpful
I'm here to give my testimony how I was cured from HIV, I contacted my HIV via blade. A friend of my use blade to peel of her finger nails and drop it where she use it, so after she has left i did know what came unto me i looked at my nails, my nails were very long and I took the blade which she just used on her own nails to cut of my finger nails, as i was maintaining my names, i mistakenly injured myself. I did even bother about it, so when I got to the hospital the next week when i was ill the doctor told me that I am HIV positive, i wondered where did i got it from so i remembered how I use my friend blade to cut off my hand so i feel so sad in my heart to the extent that i don’t even know what to do, so one day i was passing through the internet i met a testimony of a lady that all talk about how she was cured by a doctor called DR Imoloa so i quickly emailed the doctor and he also replied to me and told me the requirements which i will provide and I do according to his command, he prepare a herbal medicine for me which I took. He message me the following week that i should go for a test which i did to my own surprise i found that i was HIV negative. He also have cured for all kinds of incurable diseases like: Huntington's disease, back acne, chronic kidney failure, Addison's disease, Chronic Disease, Crohn's Disease, Cystic Fibrosis, Fibromyalgia, Inflammatory Bowel Disease, Fungal Nail Disease, Paralysis, Celia Disease , Lymphoma, Major Depression, Malignant Melanoma, Mania, Melorheostosis, Meniere's Disease, Mucopolysaccharidosis, Multiple Sclerosis, Muscle Dystrophy, Rheumatoid Arthritis, Alzheimer Disease and so many. Thanks to him once more the great doctor that cured me dr. Imoloa so you can also email him via drimolaherbalmademedicine@gmail.com or what'sapp him on +2347081986098.. God Bless you Sir.
Post a Comment