Mycosis Fungoides and Sezary Syndrome N1 TNM Finding v8

**Semantic type:** Finding

**Definition:** Clinically abnormal peripheral lymph nodes; histopathology Dutch grade 1 or National Cancer Institute (NCI) LN0-2. Note: EORTC N1 classification includes: Dutch grade 1: dermatopathic lymphadenopathy. NCI LN0: no atypical lymphocytes. NCI LN1: occasional and isolated atypical lymphocytes (not arranged in clusters). NCI LN2: many atypical lymphocytes or lymphocytes in 3-6 cell clusters. (from AJCC 8th Ed.)