A case report, human urethral myiasis of fly larva

Abstract

The present authors have observed fly larvae discharged from a patient's urethra, who was 26 year old male living at Kumihama-cho, northern Kyoto Prefecture. Of eight larvae in total, three larvae (about 2mm. long) were discharged on August 22nd, two larvae (3.4-4.8mm. long) on 25th, and three larvae (about 10mm. long) on 27th, 1961. Two larvae of the second discharge were estimated as third instar, and were identified as either Sarcophaga septentrionalis or Sarcophaga similis. The infection route was presumable that first instar larvae deposited around dirty penis of the patient invaded through the external urethral orifice into the urethra where they grew up, then they came out three times in the course of their development.