If cancer cells appear only at the original site and have not invaded the organ of origin, it is called:
A) metastasis.
B) sentinel node.
C) CIS.
D) dedifferentiation.

Question

Quizplus · Accepted Answer

CIS stands for carcinoma in situ, which means that cancer cells are present only at the original site and have not invaded the surrounding tissue or organ. It is considered a pre-cancerous condition that may progress to invasive cancer if left untreated. Metastasis refers to the spread of cancer cells to other parts of the body beyond the original site, sentinel node is the first lymph node that cancer cells are likely to spread to, and dedifferentiation refers to cancer cells losing their specialized features and becoming more primitive.

If Cancer Cells Appear Only at the Original Site and Have