PUVA photocarcinogenesis in Cheshire

Distinguishing Myth from Fact: Photocarcinogenesis and Phototherapy

Ultraviolet (UV) radiation contributes to the development of skin cancer through direct and indirect DNA damage, production of reactive oxygen species, and local immunomodulation. The association between UV radiation and skin cancer has raised concern for the risk of carcinogenesis following phototherapy. The photocarcinogenic impact of psoralen and UVA radiation (PUVA) has been extensively studied, whereas limited safety studies exist for other phototherapy modalities, such as broadband and narrowband UVB and UVA1. Because of the as of yet unclear risk, patients who have undergone any type of phototherapy should be followed for age-appropriate skin cancer screening.

Cutaneous Carcinogenic Risk of Phototherapy: An Updated Comprehensive Review

Phototherapy is among the oldest and most highly effective treatment modalities available for moderate-to-severe psoriasis. However, concern regarding the potential carcinogenic risk associated with ultraviolet B (UVB) phototherapy and/or psoralen with ultraviolet A (PUVA) has been expressed by both providers and patients. The purpose of this review is to assess the cutaneous malignancy risks of UVB phototherapy and/or PUVA in all skin types, including Caucasian and non-Caucasian patients. We searched the MEDLINE database for original research articles regarding the skin cancer risk of phototherapy. A total of 61 articles were included. In Caucasians, an increased risk of squamous cell carcinoma with PUVA therapy was reported after >250 sessions, whereas studies among non-Caucasians did not show any increased risk. There was no convincing evidence of increased skin cancer risk associated with UVB phototherapy among all skin types. In view of the continued validation of its safety, phototherapy remains a valuable treatment option for patients with moderate-to-severe psoriasis.

Skin cancer in the elderly

This article describes the clinical features, treatment options, and prognosis of the most common skin cancers: basal cell carcinoma, squamous cell carcinoma, and melanoma. Emphasis is placed on specific issues that need to be considered when dealing with cancers of the skin in the elderly population. In addition, issues surrounding the early detection and prevention of skin cancer are addressed.