Ascaris lumbricoides may rarely invade the urinary tract.
Mechanisms: migration of an adult worm up the urethra; fistula with the GI tract
The patient usually has evidence of ascariasis elsewhere.
Presentations:
(1) hematuria
(2) bladder outlet obstruction with urinary retention
(3) ureteral obstruction with hydronephrosis
(4) evacuation of a worm while urinating
Ova may be deposited in the kidneys if there is migration up the ureter.
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Specialty: Infectious Diseases
