Mycosis Fungoides and Sezary Syndrome N3 TNM Finding v7

**Semantic type:** Finding

**Definition:** Clinically abnormal peripheral lymph nodes; histopathology Dutch grades 3-4 or NCI LN4; clone positive or negative. Note: Dutch grade 3: partial effacement of lymph node architecture; many atypical cerebriform mononuclear cells (CMCs). Dutch grade 4: complete effacement of lymph node. NCI LN4: partial/complete effacement of nodal architecture by atypical lymphocytes or frankly neoplastic cells. (from AJCC 7th Ed.)

**Synonyms:** - Mycosis Fungoides and Sézary Syndrome N3 TNM Finding v7