NCIt related terms : stage 0 Merkel cell carcinoma in situ;
NCIt definition : Stage 0 includes: Tis, N0, M0. Tis: In situ primary tumor. N0: No regional lymph node
metastasis. M0: No distant metastasis. (AJCC 7th ed.);
Alternative definition : NCI-GLOSS: Abnormal cells are found in the place where they first formed and have
not spread. These abnormal cells may become cancer and spread to lymph nodes or distant
parts of the body.;