Cancer

Cancer is a group of diseases characterized by uncontrolled growth of tissue cells in the body and the invasion by these cells into nearby tissue and migration to distant sites. Cells are the building blocks of living things.
Cancer grows out of normal cells in the body. Normal cells multiply when the body needs them, and die when the body doesn't need them. Cancer appears to occur when the growth of cells in the body is out of control and cells divide too quickly. It can also occur when cells forget how to die.
There are many different kinds of cancers. Cancer can develop in almost any organ or tissue, such as the lung, colon, breast, skin, bones, or nerve tissue.

Reticulum cell sarcoma

The lymphomas also include reticulum-cell sarcoma . (A sarcoma is a malignant tumor in the connective tissue. Reticulum cells are a particular kind of connective tissue.) The disease is marked by the invasion of normal tissue by increased numbers of reticulum cells or fibers. As in the treatment of leukemia, it is important to know which of the various types of cancer has affected the lymphatic system, because each of the lymphomas responds to a different therapeutic routine.