title: Tracheal squamous cell carcinoma (SCC) metastatic to the skin in a patient on a checkpoint inhibitor.
authors.affiliation: Department of Dermatology, Walter Reed National Military Medical Center, Bethesda, Maryland.
authors.forename: Nicole M
authors.initials: NM
authors.lastname: Cassler
authors.affiliation: Department of Dermatology, Walter Reed National Military Medical Center, Bethesda, Maryland.
authors.forename: Jason D
authors.initials: JD
authors.lastname: Marquart
authors.affiliation: Department of Hematology-Oncology, Walter Reed National Military Medical Center, Bethesda, Maryland.
authors.forename: Corey A
authors.initials: CA
authors.lastname: Carter
keywords: antibody-blocking interaction with programmed death ligand 1; checkpoint inhibitor; metastatic squamous cell carcinoma; tracheal squamous cell carcinoma