The health watchdog is to carry out an "urgent" inspection into the treatment of breast cancer patients at a debt-ridden NHS trust.
The Care Quality Commission said concerns had been raised about faulty tests at Sherwood Forest Hospitals NHS Foundation Trust. The trust is to recall 79 women who had samples of their tumours removed to determine the best kind of treatment.
The CQC team will look at breast cancer screening, pathology and clinical governance at the trust.
Monitor, which regulates foundation trusts, has also ordered a series of financial reviews at Sherwood Forest, which could run out of money by January.