stage 0

Definition of stage 0 non-small cell lung carcinoma in situ
National Cancer Institute

stage 0 non-small cell lung carcinoma in situ

(... sel lung KAR-sih-NOH-muh in SY-too)
Abnormal cells are found in the lining of the airways. These abnormal cells may become cancer and spread into nearby normal tissue. Stage 0 non-small cell lung carcinoma in situ may be adenocarcinoma in situ (AIS) or squamous cell carcinoma in situ (SCIS).

Source: NCI Dictionary of Cancer Terms