pre-cancerous

What is adenocarcinoma in situ (AIS)?

Adenocarcinoma in situ (AIS) is a medical term used to describe an early form of gland-forming cancer. The word “adenocarcinoma” refers to a type of cancer that develops from glandular cells. The phrase “in situ” means “in its original place.” Together, adenocarcinoma in situ means that the cancer cells are present but have not yet …
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What is a precursor?

In pathology, the term precursor is used to describe any non-cancerous condition that has the potential to turn into cancer over time. Precursor diseases can be caused by viruses, genetic changes, or environmental factors such as smoking or excessive alcohol consumption. The chance that a precursor will eventually turn into cancer depends on many factors …
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