It means that they are descended from a single cell.
These are tumor cells that arose from a single lymphocyte or plasma cell. The kappa light chain is a piece of the structure of an antibody; monoclonal means "single type". Therefore, these are tumor cells that all produce the same antibody structure, which indicates they are all derived from a single tumor cell that originally made this antibody structure.
A monoclonal antibody is a highly specific antibody that has been formed in a laboratory setting. It is made up of clones from a hybrid cell made from a fusion of B-cells with a tumor cell.
When a tumor is benign, it means that it does not have the ability to invade the other cells in the body. Moles and warts are examples of such tumors.
Mitosis is not regulated in tumor cells
Melanoma literally means black tumor. It is a tumor of the melanin-producing cells.
When a tumor is benign, it means that it does not have the ability to invade the other cells in the body. Moles and warts are examples of such tumors.
Cell division is not regulated in tumor cells.
An osteoblastoma is a tumor of immature bone cells.
One kind of adrenal tumor that is often benign is a pheochromocytoma.
The medical term for compression of surrounding cells by tumor cells is "mass effect." This occurs when a tumor grows and displaces nearby tissues or organs, causing them to become compressed or distorted. It can lead to various symptoms depending on the location and size of the tumor.
Malignant tumor cells are cancerous, tend to grow rapidly, spread to other parts of the body, and can be life-threatening. Benign tumor cells are non-cancerous, grow slowly, do not invade nearby tissues, and are typically not life-threatening.
It means that the hepatic tumor cells closely resemble the real and "healthy" hepatic cells. When talking of tumors, the term "well-differentiated" is a "good" indicator. Cells "differentiate" one from the others in order to accomplish their function... for example, pneumonic cells are way different from hepatic cells. They don't have the same function, so they need to undergoing a process "to differentiate" themselves, according to their function. "Poorly differentiated", on the other hand, means that tumor cells do no resemble the tissue where they arose from, and that is, of course, not good at all. One last thing. When talking of hepatocellular tumor, you don't need to say "liver", because the prefix hepato means "liver".