[Introduction of the information processing system of medical examinations of yusho patients and some results obtained by the 1986 survey].

Information processing system for newly established, unified medical examinations of yusho patients which started in September 1985 was presented. Some comparative analysis was also shown on the "important findings" in yusho patients residing in Fukuoka or Nagasaki prefecture. In the 1986 survey, Fukuoka male patients showed higher percentages of pigmentation in toe nail, gingiva and palpebral conjunctiva than Nagasaki (p less than 0.01), whereas Nagasaki male patients showed higher percentages of pigmentation in buccal and lip mucosa. Average concentration of PCB in blood was higher in Nagasaki male patients (6.79 ppb) than in Fukuoka patients (4.39 ppb), the difference being significant at 1% level.