Tumor upstaging in invasive melanoma is associated with changes in clinical management and worse prognosis.

Background: The clinical implications and prognostic outcomes associated with tumor upstaging in invasive melanoma have not been well established.

Objectives: To determine the frequency of tumor upstaging in invasive melanoma, identify risk factors, and assess its impact on clinical management and outcomes.

Methods: A retrospective study using data from a statewide Surveillance Endpoints and End Results-affiliated cancer registry between 2014 and 2018 was performed.

Clinical Versus Histologic Margins for Cutaneous Squamous Cell Carcinoma: Comparing Outcomes for High-Risk Tumors Treated With Mohs Micrographic Surgery.

Background: High-risk cutaneous squamous cell carcinoma (cSCC) is associated with poor clinical outcomes. Traditionally, preoperative clinical tumor size ≥2 cm, based on Brigham and Women's Hospital (BWH) staging criteria, is high risk.

Objective: To compare outcomes of cSCC treated with Mohs micrographic surgery (MMS) with a preoperative size ≥2 cm (clinically ≥2 cm) versus cSCC with preoperative size <2 cm and postoperative defect size ≥2 cm (histologically ≥2 cm).