A MAN who claims to have the world's largest penis could be telling tall tales - with suggestions his member is only six inches long.

Roberto Esquivel Cabrera, from Saltillo, Mexico, has gained worldwide attention on his appendage after claiming that it is 18.9 inches long - making it the largest in the world.

But radiologist Dr Jesus Pablo Gil Muro, who has examined Roberto, threw the world record claims into doubt when he said the man refused to take off all the bandages and would not let him see the skin.

Dr Muro said: "When he came here to do a CT scan, my first impression was that it was a unique and unusual case. I had never seen a patient like Roberto.”

He said he had become suspicious, and conducted a CT scan, saying: "What the CT scan showed was that there is a very large foreskin. It goes just before the knee.

"But the penis itself is about 16 to 18cm from the pubis."

He explained: “So, it doesn't go all the way through the foreskin.

"The rest of the tissue found there is just foreskin, blood vessels, and some inflammation of the skin."

It then emerged Roberto had talked to his psychiatrist and revealed he had began enlarging his willy since he was a teenager, with Dr Munro saying: “He was obsessed with the penis length."

It is understood 54-year-old Roberto has been stretching it with weights since he was a teenager.

The claims have sent quivers through the world record community, particularly after the man with the second largest penis in the world argued Roberto’s todger was not what it made out to be.

Jonah, 47, from New York, told The Sun Online: "His penis isn't 19inches.

"Doctors have acknowledged this and said he could have a normal sex life if he is essentially circumcised.

"It (Roberto's story) has been going around for the past two-and-a-half years.