Sorry I forgot to include a source for this. There are many online, but the NIH has a pretty clear definition here: https://www.cancer.gov/publications/dictionaries/cancer-terms/def/carcinoma-in-situ
Sorry I forgot to include a source for this. There are many online, but the NIH has a pretty clear definition here: https://www.cancer.gov/publications/dictionaries/cancer-terms/def/carcinoma-in-situ