A 17-year-old boy has undergone the world's first penis reduction surgery, surgeons claim.
The American teen requested the surgery after his penis grew too large, restricting his ability to have sex or play competitive sports.
The boy's surgeons were shocked when he came to them complaining that his penis was too big.
When flaccid, it measured almost seven inches in length and had a circumference of 10 inches - around the size of a grapefruit.
Surgeons described it as being shaped like an American football.
The surgeon who treated the teenager, Rafael Carrion, a urologist at the University of South Florida, told MailOnline: 'There comes a time in every urologist's career that a patient makes a request so rare and impossible to comprehend that all training breaks down and leaves the physician speechless.’
Dr Carrion and his team looked at the medical literature but couldn't find any precedent for what to do. In the end, they decided to embark on a surgical technique normally used to treat Peyronie's disease, a condition where scar tissue develops along the penis, causing it to bend.
The surgeons sliced along an old circumcision scar, unwrapped the skin of the penis, and cut out two segments of tissue from either side. The doctors were able to bypass the urethra - the tube which carries urine through the penis - and all of the nerves that provide sensation.
The teenager spent just two days in hospital before returning home, apparently 'ecstatic' with his new penis.
The doctors did not take final measurements of the penis, although Dr Carrion told MailOnline the result was 'generous'.
'It's slightly longer and slightly thicker than the average male, but now it looks symmetrical, and the patient was very satisfied,' he said.
The teen now has no problem having normal erections and has full sensation.
'It looks cosmetically appealing, and he said it was a life-changing event, he's all smiles,' said Carrion.