Squamous Cell Carcinoma & Basal Cell Carcinoma — Practice
A 6-year-old child has photosensitivity, multiple freckle-like pigmented macules on sun-exposed skin and has already developed a basal cell carcinoma. Defective nucleotide excision repair is the underlying mechanism. Which is the single most important preventive measure for this child?
AHigh-dose oral vitamin D supplementation
BProphylactic systemic corticosteroids
CLifelong oral isotretinoin
DStrict photoprotection from ultraviolet radiation