Cystic bone lesions in a boy with Darier disease: A magnetic resonance imaging assessment

We describe asymptomatic bone cysts in the right humerus of a 17-year-old boy with Darier disease. The cysts were found when a radiologic skeletal survey was performed to monitor for adverse effects of oral retinoid therapy. Magnetic resonance imaging was used to confirm that the lesions were cystic and to delineate their extent. The literature was reviewed for previous reports of this association. (J Am Acad Dermatol 2009;60:1062-6.)