Stomach (general)

Antigen (general)

The basal cell carcinoma, variety of skin tumor of the deep layer skin whose malignancy is reduced.

The squamous cell carcinoma, a variety of skin tumor or malignant mucosa and is growing at the expense of epidermal keratinocytes.

The squamous intra-epidermal variety of relatively rare skin tumor that may indicate early lesions, precancerous, and basal cell carcinoma or squamous cell.

Sarcomas conjunctiva origin. This malignant tumor grows at the expense of connective tissue (supportive tissue in the body) and has the characteristic of being composed of cell proliferation (multiplication) very active and giving birth to the elements that are not fully developed, like the embryonic tissue. Sarcomas account for about 2% of all cancers. They occur mainly in young patients, and in children. 

Their main feature is their ability to invade surrounding tissues, but also to spread away from the primary tumor in the form of metastases. 

They are evolving rapidly and we are 2 types, as they develop on the common connective tissue or in the specialized tissue. Sarcomas of the common connective tissue grow at the expense of supporting tissue: they are fibrosarcoma and malignant histiocytofibroma.

 We meet this variety of tumor most often in the limbs, in the skin and peritoneum. They tend to compress the adjacent tissues and disseminate as metastases through blood, the lungs and others.

Tumors of the lymphatic system (lymphoid) tumors and leukemia bone marrow.

Metastases. Malignant tumors that spread quickly tend to generalize. They are many, and still imperfectly known. Metastasis corresponds to the migration through blood circulation or through lymphatic system, of pathological substances such as viruses, bacteria, parasites, and cancer cells that are derived from an initial injury. The main feature of malignant tumors is to metastasize. 

Specifically, metastases are caused by the detachment of cells from the original tumor (primary). Then, these cells are migrating in the blood vessels or lymph vessels. Then they bind in an organ (liver, brain, bone, lungs, etc ...) Some cancers have early metastasis, that is to say before the primary tumor is detected. Other primitive cancer cells, never give metastases.

 The metastasis site will depend on the type of cancer. Thus, breast cancer metastases mainly in the liver, bone, lung, brain and skin. A digestive cancer gives metastases primarily in the liver.