A major incident has been declared at the Royal Cornwall Hospital.
A high level of demand has put pressure on Treliske’s emergency department and hospital chiefs are asking the public to choose alternative services if possible.
Yesterday the hospital was put on black alert amid reports of patients being treated in corridors and ambulances queueing up to admit patients.
Some routine outpatient appointments had been cancelled this afternoon.
A post on the Royal Cornwall Hospitals Trust Facebook page read: “Patients are being contacted personally, so there is no need to call the hospital. Urgent cancer clinics and renal dialysis are not affected.
“We do apologise for any inconvenience but hope patients will understand our need to concentrate on caring for the high number of emergency patients needing admission.
“Any appointments that are postponed will be rescheduled as soon as possible.”
An NHS Kernow Facebook post said: “The urgent treatment centre at West Cornwall Hospital in Penzance is open for anyone needing urgent medical care for injuries and conditions such as fractures, deep cuts, non-life threatening head injuries and minor falls.”