carcinoma in situ
A cancerous tumor.
A carcinoma is a cancerous tumor.
It is called as malignant 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.
A mass of abnormal cells is a tumor. Sometimes this is cancer and sometimes not.
Malignant tumor
malignant tumor
malignant tumor
Cancerous cells exhibit uncontrolled and inappropriate mitosis. Cancerous cells will often exhibit changed morphology and gene expression profiles, often assuming the shape and gene expression of more immature or more stem-like cells (a process termed de-differentiation). Cancerous cells often exhibit unusual karyotypes. Clinically, the precise identification of a cancerous cell can be difficult and will vary tissue to tissue. Another consideration is that for at least some cancers it is theorized that only a small proportion of cells within a tumor are actively cancerous. These cells are referred to as cancer stem cells. It is theorized that in some cases only a comparatively few cells are genuinely tumor-forming (i.e. uncontrollably dividing) and generating large growths of non-tumor forming cells of the visible tumor. Identifiying these actively tumor-forming cells remains a challenge in oncology.
When cells are not responding to normal controls over growth and division, they can form tissue masses known as tumors. Tumors can be either benign (not cancerous) or malignant (cancerous).
Gamma rays, X-rays:
When cells reproduce out of control, it can lead to the formation of a mass of cells called a tumor. If the tumor is benign, it is not cancerous and typically does not spread to other parts of the body. However, if the tumor is malignant, it is cancerous and can invade nearby tissues or spread to other parts of the body, a process known as metastasis.