There are two types
of nonmelanoma skin cancer, including basal cell carcinomas (they may be dome - shaped with visible blood vessels and can look like open sores that won't heal) and squamous cell carcinomas (they may form a crusty lump on the skin or rough, scaly patches that sometimes bleed).
The molecular basis
of nonmelanoma skin cancer: new understanding.
That may be technically true: About 90 %
of nonmelanoma skin cancers are associated with exposure to ultraviolet radiation, according to the nonprofit Skin Cancer Foundation — and it's clear that most people spend more time outdoors than they do in tanning beds.
Not exact matches
A dearth
of skin pigment leaves people more susceptible to
nonmelanoma skin cancers such as squamous cell carcinoma and basal cell carcinoma.
Gay and bisexual men were up to six times more likely than heterosexual men to take part in indoor tanning, and twice as likely to report a history
of skin cancer, including
nonmelanoma and melanoma, according to a study led by UC San Francisco researchers.
Evidence is more limited and inconsistent regarding the accuracy
of the clinical visual
skin examination for detecting
nonmelanoma skin cancer.
The researchers examined the incidence
of all - type
cancer (excluding
nonmelanoma skin cancers).
Between 1992 and 2006, the number
of treatment procedures for slow - growing
nonmelanoma skin cancers increased by almost 77 %.
Subjects with treated
nonmelanoma skin cancer, in situ carcinoma or cervical intraepithelial neoplasia, regardless
of the disease - free duration, are eligible for this study if definitive treatment for the condition has been completed.
Risk
of secondary
cancers increased to 14.9 % vs. 8.8 % in those receiving lenalidomide vs. placebo, including
nonmelanoma skin cancers (3.9 % vs 2.6 %).
«It could be either basal or squamous cell carcinoma, the two
nonmelanoma forms
of skin cancer,» says dermatologist Shawn Allen, MD, spokesperson for the Skin Cancer Foundat
skin cancer,» says dermatologist Shawn Allen, MD, spokesperson for the Skin Cancer Found
cancer,» says dermatologist Shawn Allen, MD, spokesperson for the
Skin Cancer Foundat
Skin Cancer Found
Cancer Foundation.
Nonmelanoma skin cancer is, by far, the most common type
of cancer.
Several comments stressed that the USPSTF should place greater emphasis on the benefits
of detecting and treating
nonmelanoma skin cancer, noting the risk for such
cancer to become locally destructive and lead to disfigurement if left untreated.
It is therefore unknown whether there is an incremental benefit to detecting
nonmelanoma skin cancer through a program
of regular visual clinical examination vs patient self - identification as part
of general body awareness followed by reasonably prompt evaluation by a clinician.
In addition, risk estimates for death from
cancer were adjusted for history
of cancer (other than
nonmelanoma skin cancer) in a first - degree relative (yes vs. no).
Among participants who returned baseline questionnaires, we excluded those who had a history
of cancer (except
nonmelanoma skin cancer), CVD, or diabetes at baseline, left more than 10 items blank on the baseline FFQ in the NHS and more than 70 items blank in the HPFS, or reported implausible energy intake levels (< 500 or > 3500 kcal / d for women, or < 800 or > 4200 kcal / d for men).
We stopped updating diet at the beginning
of the time interval during which individuals developed
cancer (except
nonmelanoma skin cancer), cardiovascular diseases, or gestational diabetes because changes in diet after development
of these conditions may confound the relationship between diet and diabetes (21).
The researchers analyzed data, over an average
of 9.8 years
of follow - up, from over 3,200 white members
of a health maintenance organization who had a high probability
of developing
nonmelanoma skin cancer.