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If the operation is a must, one has to go ahead.
Age is not an absolute contraindication for surgery.
If there are no co-morbidities – other diseases affecting the scenario, like Hypertension
etc – she may do well.
It is a question of risk versus benefits in each case.
It ought to be a multi-speciality / tertiary care centre / of repute / with experience in similar cases...
Wishing speedy recovery