We gathered assessment and recommendations on each case using a standardized online histology form and then classified the diverse terms using the Melanocytic Pathology Assessment Tool and Hierarchy for Diagnosis (MPATH-Dx) histology form.13 (link) This tool organizes pathologists’ diverse descriptive terms of melanocytic skin lesions into five diagnostic classes, with suggested treatment recommendations (table 1). Example diagnostic terms for each class (and suggested treatment recommendations, all provided under the assumption that specimen margins are positive) include: class I, nevus or mild atypia (no further treatment margin required); class II, moderate atypia (consider narrow but complete repeat excision margin <5 mm); class III, severe atypia or melanoma in situ (repeat excision with ≥5 mm but <1 cm margins); class IV, pT1a invasive melanoma (wide excision ≥1 cm margin); and class V, ≥pT1b invasive melanoma (wide excision ≥1 cm with possible additional treatment, such as sentinel lymph node biopsy and adjuvant therapy).