Same-site transdifferentiation of basal cell carcinoma to squamous cell carcinoma as a mechanism of vismodegib treatment resistance: Two cases requiring multimodal and multidisciplinary limb-sparing techniques

• Brooke A. Burgess, MD,
• Rebecca J. Wang, BSA,
• Joshua L. Owen, MD, PhD

Affiliations

Brooke A. Burgess, MD

Division of Dermatology, University of Texas Health Science Center San Antonio, San Antonio, Texas

Rebecca J. Wang, BSA

Long School of Medicine, University of Texas Health Science Center San Antonio, San Antonio, Texas

Joshua L. Owen, MD, PhD

Division of Dermatology, University of Texas Health Science Center San Antonio, San Antonio, Texas; Dermatology Service, South Texas Veterans Health Care System, San Antonio, Texas; Correspondence to: Joshua L. Owen, MD, PhD, Dermatology Service, South Texas Veterans Health Care System, 7400 Merton Minter, San Antonio, TX 78229