National Cancer Institute National Cancer Institute
U.S. National Institutes of Health National Cancer Institute
Dictionary of Cancer Terms
Send to Printer
stage 0 nonmelanoma skin carcinoma in situ (... non-MEH-luh-NOH-muh skin KAR-sih-NOH-muh in SY-too)

 Abnormal cells are found in the squamous cell or basal cell layer of the epidermis (outer layer of skin). These abnormal cells may become cancer and spread into nearby normal tissue. Also called nonmelanoma carcinoma in situ.

Enlarge
Stage 0 nonmelanoma; drawing shows skin anatomy with abnormal cells in the epidermis (outer layer of the skin). Also shown are the dermis (inner layer of the skin) and subcutaneous tissue below the dermis.

Previous Definitions:stage 0 medullary thyroid carcinoma in situ, stage 0 melanoma, stage 0 nasal cavity and ethmoid sinus carcinoma in situ, stage 0 nasopharyngeal carcinoma in situ, stage 0 non-small cell lung carcinoma in situ
Next Definitions:stage 0 oropharyngeal carcinoma in situ, stage 0 pancreatic carcinoma in situ, stage 0 penile carcinoma in situ, stage 0 testicular carcinoma in situ, stage 0 transitional cell carcinoma in situ of the renal pelvis and ureter