Stage IIIA Mycosis Fungoides and Sezary Syndrome AJCC v8

**Semantic type:** Neoplastic Process

**Definition:** Stage IIIA includes: T4, N0-2, M0, B0. T4: Confluence of erythema covering 80% or more of body surface area. N0: No clinically abnormal peripheral lymph nodes; biopsy not required. N1: Clinically abnormal peripheral lymph nodes; histopathology Dutch grade 1 or National Cancer Institute (NCI) LN0-2. N2: Clinically abnormal peripheral lymph nodes; histopathology Dutch grade 2 or NCI LN3. M0: No visceral organ involvement. B0: Absence of significant blood involvement: 5% or less of peripheral blood lymphocytes are atypical (Sezary cells). (AJCC 8th ed.)