An elderly man was left in agony after a leech entered into his body through his penis and drank a pint of blood from his internal organs.
Doctors in Cambodia say the patient went for a dip without any clothes to cool off in a pond when the invertebrate slithered up his penis.
That night, however, he was left in severe pain after he tried to use the toilet in his home near Phnom Penh.
Medics at a hospital used a tiny camera and found the blood-sucking creature had made its way up his urethra into his bladder.
Scans showed that the parasite had already wounded parts of the man’s internal organs with its sharp teeth.
Medics then used another tool called a bipolar resectoscope to kill the leech before extracting it.
The removal process was complicated by the face that the leech has swollen in size after taking more 500ml of blood it had sucked from the man
Doctors at the city’s Calmette Hospital have now warned residents be careful when swimming in ponds during the rainy season.
In a statement online, it said: “The waters are rich with leeches and other insects during the rainy season.
”Consult with the specialists immediately if you are experiencing pain in your body to get it treated correctly.”
The man stayed overnight in hospital where his condition was monitored and he was discharged the next day.