172 Epidemiology and survival of merkel cell carcinoma by sex in the United States

Introduction: Merkel Cell Carcinoma (MCC) is a rare, aggressive skin cancer with a known male predominance. However, it is unknown whether tumor presentation, age of presentation, or prognosis varies by sex. We analyzed data from the National Cancer Institute’s Surveillance, Epidemiology, and End Results (SEERs) Program to investigate these questions. Methods: Data for MCC were collected from the SEER-18 (2000-2018) database. The total number of cases, incidence, age, race, ethnicity, primary tumor location, staging, cause-specific death, and first malignancy status were collected in SEER*Stat.