Saptaningrum, M.A. and Wicaksana, P.F. 2026. Perichondrium-Sparing Excision and Mastoid Subdermal Undermining for a Decade-Long Giant Retroauricular Verruca Vulgaris Mimicking Verrucous Carcinoma: An Observational Analytic Case Study. Sriwijaya Journal of Surgery. 9, 1 (Jun. 2026), 15-29. DOI:https://doi.org/10.37275/sjs.v9i1.169.