An NHS health board needs £31m to return its services to the same levels it provided last year, MSPs have been told.

NHS Lothian is the latest Scottish health board facing financial problems, with its counterpart NHS Tayside under fire for using millions of pounds of charitable donations to fund a new IT system.

The fresh funding shortfall was revealed in evidence to Holyrood's health committee.

Health secretary Shona Robison has criticised opposition parties calling on her to resign in recent days.

NHS Lothian's deputy chief executive Jim Crombie said the board had "characterised a gap in our ability and our capacity to deliver against the access targets".

He said: "We've been clear to the board, we've been clear to government that there is a significant element of funding that would be required to allow us to recover.

"Part of the request from the Scottish Government was to present what they characterise as an operational plan...for 2018/19 and in that we've characterised all of our intelligence around demand, all of our intelligence around efficiency, productivity and maximising the use of our resource.

"But even doing all that we've characterised a gap and we've characterised the quantum of funding that would be required to allow NHS Lothian to return to the levels of performance in terms of patients waiting over 12 weeks at March 2017."

Jacquie Campbell, chief officer of acute services at the health board, said: "Even if we had the funding to return to March 2017 we don't have the overarching capacity either internally or with the external providers in relation to that and there's often a lead in time in starting up capacity."