Reports in Vietnam say that on August 15, a Vietnamese boy was hospitalised with pain in the lower abdomen and blood in the urine.
Family members said the boy took a bath in a river near his house before the pain started.
Through the ultrasound and CT scans, doctors discovered a solid swelling of clotted blood within the boy’s bladder.
This blood clot changed size and grew gradually.
Determining that this might be a strange thing, doctors conducted surgery and picked up a 20 cm long leech living in the bladder.
Doctors said the leech entered into the bladder through the urethra when it was small but grew bigger after entering the bladder and sucking blood.
The boy has recovered and has been discharged.