ヒトヒフバエＤｅｒｍａｔｏｂｉａ ｈｏｍｉｎｉｓによる蝿症の１例

Abstract

One case of human myiasis caused by Dermatobia hominis was reported.The patient was a 22-year-old Japanese woman who had been in Brazil for 12 years. She lives in the suburbs of Sao Paulo City at present.About the middle of December 1988, slight bleeding was noticed between the first and the second toe of right foot. She came to Japan for sightseeing on January 1 and visited National Medical Center on January 23, 1989. When she consulted the doctor, the swelling of 10 mm in diameter was noticed which was accompanied by the oozing of blood. The affected part was not cured after 3 days of sterilization. On January 27, a maggot was taken out from the lesion surgically. After the maggot was removed from the patient, the symptom disappeared rapidly. The maggot was 9.5 mm long and the color was yellowish white. The strong spines were distributed on the surface from the third to the seventh segment. The posterior spiracles were lost during the process of extirpation of the worm. The anterior spiracles were small and not flowerlike in appearance. It was identified as scond instar larva of Dermatobia hominis based upon above findings.Occlusion of the punctum on the skin with vaseline causes the maggot to migrate out of the skin to breathe.