This pensioner has an enormous tumour on his back as big as a sack of potatoes – which he has been carrying around for 40 years.Hesus Demata, 76, first noticed a tiny lump the size of an olive just below his neck in 1978.But the married father-of-four said he did not go to the doctors because there was no pain and he was afraid of large medical bills.The benign tumour kept growing is now half a metre (1.5 feet) wide and stretches down to his backside.It weighs around five kilograms. Hesus has finally stopped his £150-a-month job as a farmer because the tumour became too heavy to lug around all day in the fields.Locals in Camarines Norte, Philippines, are now trying to scrape together enough money to send Hesus to hospital to have an operation which could cost the equivalent of thousands of pounds.Speaking outside his home with wife Florentina Demata, 74, Hesus said he still felt no pain from the growth but was ''tired because of its weight''.He added: ''It started on my left shoulder. It was the size of calamansi fruit [a mandarin-sized citrus fruit]. Just small."I didn't bother with doctors because it was not painful. I was afraid that the treatment will incur a huge amount of money. I only get enough money for food and to pay the farming expenses."This has been on my back for a long time now. I used to work hard in the farm when this was small. Now that it has gone to this size, I have had to stop because it's really heavy.''Florentina said that they have four children who sometimes help them in the farm and support them.The clip was filmed on May 8.