A Rare Case of Auricular Cartilage Calcification Secondary to Actinic Damage

Introduction: Auricular cartilage calcification, commonly referred to as "petrified ears," is a rare phenomenon characterized by progressive hardening of the auricular cartilage. While this condition is typically associated with endocrinopathies, metabolic disorders, or environmental insults such as frostbite or trauma, chronic actinic damage as a primary etiology has been infrequently reported. We present a case of auricular cartilage calcification in which chronic actinic skin damage was the most likely contributing factor. Case Report: A 54-year-old male with a history of coronary artery disease and hyperlipidemia presented with progressive bilateral auricular induration without associated pain, systemic symptoms, or prior trauma. Examination revealed rigid auricles with overlying scale, consistent with chronic actinic damage. Histopathologic evaluation of a 3 mm punch biopsy demonstrated focal calcium deposition within the auricular cartilage and surrounding dermis, confirmed by Von Kossa staining. Given the absence of systemic symptoms, normal laboratory findings, and a history of bilateral actinic keratoses of the ears, actinic damage was determined to be the most likely etiology. The patient declined further laboratory workup, and no additional intervention was pursued. Discussion: This case highlights an uncommon etiology of auricular cartilage calcification, a rare condition most often associated with systemic disease or mechanical injury. While actinic damage has been proposed as a potential contributing factor in prior reports, few cases have directly implicated chronic sun exposure as the primary mechanism. Recognition of this presentation is essential for accurate diagnosis and appropriate management, particularly in patients without a history of trauma or systemic disease.