Stage 0 Cutaneous Merkel Cell Carcinoma AJCC v7

**Semantic type:** Neoplastic Process

**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.)

**Synonyms:** - Stage 0 Cutaneous Merkel Cell Carcinoma - stage 0 Merkel cell carcinoma in situ