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Cancer

About Salivary Gland Cancer

Salivary gland cancer is a type of cancer that starts in the salivary glands present in the oral cavity, neck or throat region. There are three main salivary glands namely parotid, sublingual and submandibular glands. The most commonly involved salivary gland is the parotid gland located in front of the ear. Common symptoms include lump in the affected salivary gland, weakness of the muscle of the face, difficulty in swallowing etc. older people with history of exposure to radiation are at increased risk of suffering from salivary gland cancer. Surgery, radiation therapy and chemotherapy are the different modes of treatment.


What is soft tissue sarcoma?

Soft-tissue sarcoma is the cancerous tumor developing in the soft tissue (connective tissue) of the body. Soft tissue is the tissue that connects, support the other body structures. Soft tissue include muscles, blood vessels, nerves, the end portion of the muscle attached to the corresponding bone (tendon), lining of the joint cavity (the synovial cover) and fat tissue.


What is a retinoblastoma?

Retinoblastoma is a type of cancer that affects the cells of the retina of the eyes. In developed countries retinoblastoma has very good cure rate of about 95 to 98%. Approximately 9 out of 10 children suffering from retinoblastoma lead a healthy adult life. There are two forms of retinoblastoma one is hereditaryand other form is not inherited.


Definition

Carcinoma of the lip is the most common cancer to affect the vermilion zone of the lip. Cancer of the lower lip is a squamous cell carcinoma almost 90% of the times; where as the cancer of the upper lip is more often basal cell carcinoma. Squamous cell carcinoma involves the red colored part of the lip where as the basal cell carcinoma tends to involve the border of the lip at the junction of lip and skin.


What is colon cancer?

Colon cancer is the cancer affecting the colon, the major portion of the large bowel. Usually the rectum is also affected and therefore colon cancer is now more commonly referred to collectively as colorectal cancer. Common symptoms are long term passage of loose stool, constipation (change of bowel habit) and bloody stool. Like any other cancer, the cause of colon cancer is not very clear, but increasing age, lifestyle habits along with genetic abnormalities are the common factors held responsible. Colon cancers if diagnosed at an early stage, when still confined to the walls of the colon, are curable with surgery. More advanced cases, where the ccancer that has spread to other regions of the body, are managed with chemotherapy (drugs), radiation and surgery.


What are benign brain tumors?

Brain tumors arise due to abnormal growth of the cells of the brain. Some are cancerous (malignant) while others are not (benign). In terms of benign tumors of the brain, these growths are usually slow growing, with a clear cut margin and do not spread to the surrounding tissue. Malignant brain tumors (cancer) are fast growing and rapidly spread to other parts of the brain or other organs. Brain cancer is often seen as more dangerous due to its life threatening potential. However, in the brain, even benign tumors are dangerous depending on the location of the brain where it occurs. Usually brain tumors do not recur after surgery and benign tumors rarely become cancerous (malignant).


Cancer, one of the most deadly diseases known to human kind, is actually a disease of cells, the basic unit of a living body. Cancer is caused due to abnormally high rate of cell division in a particular organ or tissue system of the human body.  In a normally functioning organ or tissue, cell division is a controlled process. The process of mitosis (cell division) occurs in the organ only when new cells are needed. Cell division is a process of check and balance, which helps maintain the proper structure and function of the organ or tissue. However, disruption of this check and balance process, can result in uncontrolled cell division, that eventually forms a mass of proliferated cells, known as tumour.

Lung Cancer

Lung cancer is due to uncontrolled cell division in the pulmonary cells. As mentioned earlier, uncontrolled cell division results in the formation of tumours. Tumours can be benign or malignant in nature. Benign tumours are non-cancerous and can be easily removed by operation.

Lung Cancer

Source : flickr


Skin Cancer

Skin cancer is one of most common forms of cancer found in human beings. The three different types of skin cancers are squamous cell carcinoma (SCC), basal cell carcinoma (BCC) and melanoma. These three types of skin cancers are named after the type of skin cells where the cancer occurs. Usually skin cancer develops on the outermost layers of the skin which makes most forms of skin cancer detectable in their early stages. Also, though skin cancer can cause disfiguration, it is very rare that people die due to skin cancer, except in case of melanoma. Melanoma is not a very common type of skin cancer but it is the most serious and fatal type of skin cancer and it is mostly caused due to over exposure to sun for long periods. The most common type of skin cancer is the basal cell skin cancer. Together both the BCC and SCC are known as nonmelanoma skin cancer.

Anatomy of the human skin

Source: Wikimedia Commons