A miracle baby who was born the size of a 'small doll' and defied doctors who said he would die is set to go home for the first time after spending 545 days in hospital.

Mikey Barone, now 17 months, of Buffalo, New York, will finally be able to experience the outside world after he was born on July 5, 2017.

His parents Kristine, 40 and Michael, 37, were devastated when their six-month ultrasound scan revealed Mrs Barone had dangerously high blood pressure, forcing her to give birth via C-section at just 25 weeks.

Weighing just 1lb 10oz, Mikey needed breathing apparatus to keep him alive, which his parents refused to remove despite medics suggesting they let him die in peace.

After enduring multiple life-saving surgeries, the youngster is finally strong enough to go outside despite the risk of infection.

Mikey Barone was born the size of a 'small doll' at just 1lb 10oz (left). His parents Kristine and Michael Barone (pictured right with their newborn son) refused to give up on him when doctors suggested they remove his breathing tube and let the youngster die in peace

Mrs Barone - who conceived naturally after four-and-a-half years of fertility treatment - was told at her six-month ultrasound scan (pictured) she had dangerously high blood pressure, and her kidneys and liver were failing. Mikey therefore had to be born at 25 weeks via C-section

Mr and Mrs Barone were shocked to discover they had conceived naturally after enduring four-and-a-half years of fertility treatment and a miscarriage.

'It was kind of like a miracle, my husband tried to talk me into taking a test, but it didn't feel right after all the treatment and everything,' Mrs Barone said.

'But I went through it, thinking I would do it to humour him and when it came out positive, I couldn't believe it.'

However, their joy was short lived when Mrs Barone was forced to give birth early when her blood pressure rose, and her liver and kidneys started to fail.

Mrs Barone - who cares for her son full time - said: 'When Mikey was born, he was the size of a very small doll, he looked so skinny with a tiny body and a big head.

'We had many meetings where doctors told us he would have a bad quality of life because of his lungs and he wouldn't get very far.

'They wanted to take out his breathing tube, then hand him to me, from there he would either thrive or pass away in my arms.

'We couldn't do that to him and instead took each day as it came, hoping for the best.'

Mikey (pictured left with his ventilator and feeding tube attached) has never left hospital despite being born on July 5 2017. His mother (pictured left with her son and husband) has spent every night with Mikey, refusing to leave hospital unless it is with him

Pictured as a newborn, medics warned Mikey's parents he would have a poor quality of life

Mikey - who suffers from chronic obstructive pulmonary disorder and weakness of the airway walls - only left hospital to be passed to a different treatment centre.

The family's hopes were initially raised when doctors suggested the youngster may be home in time for Christmas.

But medics then revealed Mikey - who is still fed via a tube - needed further surgery and had to stay in hospital over the festive season.

'We were all ready to have him home around Christmas, then suddenly we had the emergency and were told he couldn't leave,' Mrs Barone said.

'I was a bit depressed, it was disappointing, but we decided to order some lights and put them around his room. It definitely made it more special.'

His parents decorated his hospital room at Christmas after initially being told he would be able to go home for the festive season. Their hopes were dashed when he needed further surgery

Against all the odds, Mikey is now 'thriving' and ready to go home.

'I would love to see the doctors who were ready to give up on our little boy now, as he is now thriving,' Mrs Barone said.

'We are so proud of all the small steps he has made.'

The ordeal has taken a huge toll on the family, with Mrs Barone spending every single day in hospital with her son.

'Staying with him has given me the opportunity to learn what I needed to take care of him,' she said. 'It feels like this is where I am supposed to be,' she said.

'I am excited to take him for a walk when it's warm, I think that's what I am really looking forward to the most about getting him home.

'He knows there is a world out there but hasn't been able to see it, feel it and be out there.'

Mikey (pictured left on his birthday) is now 'thriving' and strong enough to go outside despite the risk of infections. Mrs Barone is pictured right during her 'miracle' pregnancy

The Barone family have been helped by the fundraising efforts of the website Sweet Buffalo - which publishes 'positive and inspirational stories to brighten your day'.

Its founder - Kimberly LaRussa, 31 - said: 'Mikey's mum shared a photo with me of the Christmas tree of lights she put up in his window at the hospital.

'Although the funds are much needed to them, I also wanted to give them some hope and show them we care.

'Mikey became a little superstar here in Buffalo after everyone had a chance to see how amazingly strong and wonderful he is.'

His parents are speaking out to help them get donations to cover their medical bills - which they estimate could be more than a million dollars.

'I have not left the hospital since July, I've always said the only way I was leaving was when we were both able to leave,' Mrs Barone said.

'The hospital has told us they will send us a medical bill, but we have no idea what it will be.

'We are expecting it to be really high, we don't know how much our insurance will cover but we expect the bill to be in the millions.

'There was a guy on Facebook that was in the NICU here with his kid and nowhere close to the length of time we were and his bill was $4.8million [around £3,689,080].'

Donate towards Mikey's medical costs here.