NHS Lothian said “a small number” of operations had been cancelled due to high demand.
It comes as various hospitals around the country experienced high levels of demand over the weekend and into the working week.
While relatively few have been postponed in the Lothians, NHS Greater Glasgow and Clyde said it is experiencing “extreme pressure” on its systems and has had to postpone 44 planned procedures since yesterday. NHS Grampian said it postponed 20 planned, or “elective”, procedures today and said Aberdeen Royal Infirmary was “particularly busy”.
A spokeswoman said winter pressures were partly behind the situation and stressed it was not due to staffing issues.
James Crombie, director of scheduled care at NHS Lothian, said: “We are experiencing a very busy period across all our hospitals and as a consequence of this we have deferred a number of elective procedures.
“We sincerely apologise to all those affected, our clinical teams will be working hard to offer suitable alternative dates as quickly as we can.”