To the Editor.—
Drs Weinstock and Horm1 have reported on 721 incident cases of mycosis fungoides diagnosed between 1973 and 1984, which were ascertained by nine population-based cancer registries that are part of the Surveillance, Epidemiology, and End Results (SEER) program of the National Cancer Institute, Bethesda, Md. Their data show a striking increase in incidence with age, a twofold greater risk for men than for women, and that blacks have twice the risk of whites.The Cancer Surveillance Program of Los Angeles County, California, is a (non-SEER) population-based cancer registry that identifies all newly diagnosed cancer cases occurring among the more than 8.5 million residents of Los Angeles County. Data have been recorded for well over 95% of the incident cancer cases occurring in county residents since 1972. We have examined data from our registry to determine whether we see similar trends to those reported by Drs Weinstock
Bernstein L, Deapen D, Ross RK. Mycosis Fungoides. JAMA. 1989;261(13):1882. doi:10.1001/jama.1989.03420130044019
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