A mid-tier law firm will represent more than 50 former patients of Queensland hospitals who are suing for negligence.

BRISBANE-based law firm Trilby Misso lawyers will represent more than 50 former patients of Queensland hospitals who are suing for negligence.

The hospitals facing action are scattered across the state from the north to Brisbane. Doctors are accused of botching a caesarean birth and failing to diagnose cancer, among other incidents.

Luke Short from Trilby Misso lawyers said notices of claims had been served or were being prepared against the Royal Women's Hospital, the Wesley Hospital, the Wesley Medical Centre and Redlands Hospital in Brisbane and several regional hospitals.

Short said there had also been claims involving numerous surgical errors, such as a woman who was not given adequate anaesthetic during a caesarean section birth at a Sunshine Coast hospital. A brain tumour was also allegedly missed by the Royal Women's Hospital in Brisbane.

"Some of the misdiagnoses and errors that we are getting advised about are the sorts of things you hear about in third world countries, not a nation like Australia," Short said.

The legal proceedings come only a week after an anonymous survey by Salaried Doctors Queensland (SDQ) found doctors admitted being responsible for the deaths of patients.

The survey of more than 100 doctors found 59 per cent had made mistakes in performing procedures while fatigued, two of which led to patients dying.