Southport & Ormskirk Hospitals NHS Trust say they're still experiencing difficulties after a cyber attack on NHS computer systems.
However bosses at the trust say patient safety is being maintained.
Patients are being warned to only use Accident and Emergency at both Southport and Ormskirk hospitals only in an emergency.
The trust also say that all patient information is safe following the breach.
A full statement can be found below.
Patients who are scheduled for surgery today and tomorrow (Tuesday 16th May) should not to attend unless we contact you directly today.
All outpatients and endoscopy appointments for today and tomorrow have been cancelled. We will contact you to make a new appointment.
Routine MRI and CT scans have also been cancelled today and tomorrow. Patients will be contacted directly if they need to attend.
Dialysis and blood clinic (phlebotomy) patients should attend their appointments as usual.
The pregnancy assessment unit at Ormskirk hospital will be open as usual.
All antenatal clinics at Southport, Ormskirk and in the community will go ahead as usual. This includes pregnancy ultrasound.
Gynaecology and sexual health clinics are operating as usual but there may be delays.
Meanwhile Health Secretary Jeremy Hunt has confirmed there has not been a second wave of cyber attacks on NHS trusts.
Large swathes of the NHS have been paralysed by the cyber attack, which hit 200,000 victims in 150 countries around the world.
More top news
Snow causes road closures and event cancellations
Icy start to the new week. Turning milder and more unsettled. The big thaw sets in...
We asked for your best snowy shots from Sunday's whiteout across the North West. Here's just a few of them.