An independent report into allegations of poor management and risks to patient safety at a leading radiology department will not be published in full.

Professor Ian Cameron was asked to investigate Hammersmith Hospitals trust by former health secretary Frank Dobson after doctors and clerical workers attacked two earlier inquiries as 'cover-ups'. But the Department of Health has now released a confidential letter from Professor Cameron 'strongly recommending' that the full report stay private because witnesses gave evidence in confidence. A summary of the report has been issued and says a backlog of thousands of unreported scans and x-rays had left patients 'potentially at risk'. It says Professor Cameron found a 'worrying number of persons' who felt 'unwilling to speak out', but concludes that no staff were victimised for whistleblowing.

Professor Cameron called on the trust and Imperial College of Science and Technology to take 'a radical new approach' to tackle the problems.

A spokesperson for the trust said: 'We are looking carefully at Professor Cameron's findings and are working to ensure that any problems that arose in the past do not arise again.'

Whistleblower Professor Peter Dawson said: 'The summary press release hardly encourages anyone in the health service to put their head above the parapet in the interests of patients.'