Merkel Cell Carcinoma pN1a(sn) TNM Finding v8

**Semantic type:** Finding

**Definition:** Merkel cell carcinoma with clinically occult regional lymph node metastasis identified only by sentinel lymph node biopsy. (from AJCC 8th Ed.)

**Synonyms:** - Neuroendocrine Carcinoma of the Skin pN1a(sn) TNM Finding v8