Can you spot the difference between how this story appeared on the Guardian last night...

A Spanish clinic today revealed it had performed a sex-change operation on a 16-year-old boy, making him the youngest patient to undergo the operation in the country's history. The unnamed teenager had been taking hormones to change his body since he was 15, according to doctors who treated him at Barcelona's hospital clínico, and he had been seeing doctors and psychiatrists for even longer.... [Permission] was given in November by a judge after the boy's parents had themselves made the request. The operation was carried out in December, though news of it was only released on Monday.

The boy had reportedly tried to commit suicide on several occasions. As a child he was convinced that he was really female, but had been born in the wrong body. "The judge consulted many medical experts and doctors, all of whom have recommended that he be operated on … she is very happy," Mañero told El País.

And how it appears the Guardian's website now:

A Spanish clinic today revealed it had performed a male-to-female sex-change operation on a 16-year-old, making her the youngest patient to undergo the operation in the country's history. The unnamed teenager had been taking hormones to change her body since she was 15, according to doctors who treated her at Barcelona's hospital clínico, and she had been seeing doctors and psychiatrists for even longer. [Permission] was given in November by a judge after the the child's parents had themselves made the request. The operation was carried out in December, though news of it was only released on Monday.

The teenager had reportedly tried to commit suicide on several occasions. As a child she was convinced that she was really female, but had been born in the wrong body. "The judge consulted many medical experts and doctors, all of whom have recommended that he be operated on … she is very happy," Mañero told El País.

Did you spot the difference?