Cancer begins when normal cells change and grows uncontrollably, forming a mass called a tumor. A tumor can be benign (noncancerous) or malignant (cancerous, meaning it can spread to other parts of the body). http://www.bharatbook.com/detail.asp?id=214710&rt=Head-and-Neck-Cancer-Market-in-India.html
Head and neck cancer is a term used to describe a range of malignant tumors that can appear in or around the lip, oral cavity, tongue, pharynx, larynx, nasal cavity, and sinuses. Neoplasms of other associated structures such as the ear, orbit, skull base, and salivary glands are also included within the scope of head and neck cancer management. Skin cancers of the head and neck region have not traditionally been included in the definition, since the risk factors and treatment can differ in many respects from neoplasms at other head and neck sites. Likewise, neoplasms affecting the brain are categorized separately. ” market research reports ”
Most head and neck cancers are squamous cell carcinomas (mucosal surfaces are moist tissues lining hollow organs and cavities of the body open to the environment. Normal mucosal cells look like scales (squamous) under the microscope, so head and neck cancers are often referred to as squamous cell carcinomas), meaning they begin in the flat, squamous cells that make up the thin, surface layer (called the epithelium) of the structures in the head and neck. Directly beneath this lining, some areas of the head and neck have a layer of moist tissue, called the mucosa. A cancer, if, limited to the squamous layer of cells, is called carcinoma in situ.
But, if the cancer grows beyond this cell layer and moves into deeper tissue, then it is called invasive squamous cell carcinoma.
Table of Contents :
Signs and Symptoms
Recurrent HnN cancer
Metastatic HnN cancer
Prescribed drug classes
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