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1.日光角化病(AK)的发生率:从1956～1960年间由三木等报告了41个大学医院的皮肤科初诊患者总数的851 685例中有48例,约占0.006%,其发生率甚低.为了研究AK确切的发生率,作者于1985年、1986年对长崎县某渔业街50岁以上的居民作为对象进行实际调查.多数居民受到相当强的紫外线照射.结果:50岁以上的受检者99名,视诊为AK病例者24例,病理组织学确诊者11例,约占11%.在长崎大学皮肤科,50岁以上的初诊患者总数为1220例.有AK9例约占0.7%,全岛居民数5090人,AK的发生率最低限度也有0.2%,与三木报告的0.006%相比高30倍以上.
1. Incidence of keratosis keratosis (AK): From 1956 to 1960 by Suki et al. reported that of 851,685 cases of dermatology at the 41 university hospitals, there were 48 cases, accounting for about 0.006% of the total. Very low. In order to study the exact prevalence of AK, the author conducted an actual survey of residents over 50 years of age in a fishing street in Nagasaki Prefecture in 1985 and 1986. Most of the residents were exposed to very strong ultraviolet rays. Results: 50 years of age or older Of the 99 subjects, 24 were visually diagnosed with AK, and 11 were diagnosed with pathological histology. In the Department of Dermatology, Nagasaki University, the total number of newly diagnosed patients over the age of 50 was 1,220. There were 9 cases of AK. About 0.7%, the number of residents of the island is 5090, and the minimum incidence of AK is also 0.2%, which is more than 30 times higher than the 0.006% reported by Miki.