Fluorouracil Associated With Reduced Surgery for Squamous Cell Carcinoma

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For those with a history of keratinocyte carcinomas, fluorouracil can lower risk of surgery.
For those with a history of keratinocyte carcinomas, fluorouracil can lower risk of surgery.

(HealthDay News) -- Fluorouracil application can reduce the risk of surgery for squamous cell carcinoma for one year among patients with a history of keratinocyte carcinomas, according to a study published online Jan. 3 in JAMA Dermatology.

Martin A. Weinstock, M.D., Ph.D., from the Veterans Affairs Medical Center in Providence, R.I., and colleagues randomized 932 veterans with a history of at least two keratinocyte carcinomas in the past five years to applications of fluorouracil, 5 percent (468 patients), or vehicle control cream (464 patients) to the face and ears twice daily for two to four weeks.

The researchers found that over four years, 299 patients developed a basal cell carcinoma end point and 108 developed a squamous cell carcinoma end point. There was no difference between the treatment groups in the time to first keratinocyte, basal cell, or squamous cell carcinoma over the entire study. During the first year, 1 and 4 percent of patients in the fluorouracil and control groups developed a squamous cell carcinoma, respectively (75 percent risk reduction; 95 percent confidence interval, 35 to 91 percent; P = 0.002). The 11 percent reduction in basal cell carcinoma risk during the first year in the fluorouracil group was not significant, and there was not a significant effect on keratinocyte carcinoma risk.

"A conventional course of fluorouracil to the face and ears substantially reduces surgery for squamous cell carcinoma for one year," the authors write.

Two authors disclosed financial ties to the pharmaceutical industry.

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