“…Childhood onset of BCC has previously been associated with albinism, 21,27 Bazex syndrome, 21,28 BCC nevus syndrome, 25,26,[29][30][31][32][33]53 nevus sebaceous, 2,25,26,[34][35][36][37][38][39][40] solid organ transplants, 47,48 xeroderma pigmentosum, 25,29,32,[49][50][51][52] and radiotherapy-treated cancers, such as astrocytoma, 44 ependymoma, 41 hemangioma, 26 Hodgkin lymphoma, 38,46 leukemia, 38,[42][43][44][45][46] medulloblastoma, 22,29,33,46 neuroblastoma, 38 optic nerve glioma, 41 and unspecified malignant tumor. 32 Children are defined to be 18 y...…”