Squamous cell carcinoma is a malignant formation that develops from epithelial cells of the mucous membranes or skin. Squamous cell carcinoma is divided into horny and non-keratinizing. For keratinizing cancer characterized by the formation of limited structures (pearls), covered with characteristic crusts of keratinized cells. This form of squamous cell cancer is approximately ¾ of all cases and progresses relatively slowly.
Squamous keratinizing skin cancer
A tumor can occur on any part of the body, but most often affects open areas of the body that regularly fall under direct sunlight (face, neck). At the initial stage, the disease manifests itself as small nodules on the skin, which practically do not change color and are dense to the touch. As the development of these tubercles change color (from bright red to brown), covered with scales of a yellowish hue and even with minimal exposure begin to bleed.
Squamous squamous carcinoma of the oral cavity
Among cancer of the larynx and oral cavity squamous keratinized cancer is the most common. It accounts for about 90% of cases. Cancer can be both superficial, affecting only the epithelium, and deep, with germination in the muscle tissue. The second form is often prone to metastasis. The surface of the tumor has a well-defined and dense structure, a grayish hue, bulges above the level of the mucosa and usually occupies a large enough area. Tumors of this kind are painful when touched, often bleed, can make swallowing difficult. Their appearance is accompanied by inflammation of the lymph nodes in the region of the jaw and neck.
Squamous cell lung cancer
Since there is no flat epithelium directly in the lungs, the development of cancer is preceded by metaplasia (a change in the structure of the mucosa) of lung tissue. Lung cancer , as a rule, develops slowly and is accompanied by a chronic cough, the appearance of blood in the phlegm, wheezing, shortness of breath, general weakness, weight loss.
Squamous cellulose squamous cancer of the rectum
Horny form of colon cancer is rare, but it is characterized by rapid development and malignancy, with a high percentage of metastasis to other organs. The tumor can quickly expand and cover up to 30% of the lumen of the intestine. In this case, there are frequent false desires for defecation, the sensation of a foreign body in the rectum, pain, bleeding during bowel movement.