Urinary ascariasis in a man with hematuria.

We present a case believed to be the first reported North American presentation of Ascaris lumbricoides within the urogenital tract. A young man came to the emergency department because of painless hematuria and having observed a 6-inch worm exit his urethra while urinating. The most common site for A lumbricoides infection is the gastrointestinal tract, specifically the area of the hepatopancreatic ducts. Worldwide, A lumbricoides infections are ubiquitous, but infections outside the alimentary tract are extremely rare.