A review of cases by an NHS trust finds that 20 women underwent unnecessary mastectomies, while other patients suffered significant harm during their care. The findings also indicate that harm extends beyond the specific issue of unnecessary surgery.

Across the outlets, figures from the review are cited: in a set of 514 cases examined so far, 315 patients are reported to have suffered harm, including 77 patients who suffered significant harm. Sky News and the Evening Standard both describe the review as identifying both unnecessary procedures and serious patient harm.

The coverage does not detail the trust involved or the causes behind the outcomes in the provided excerpts. The main difference in emphasis is how outlets frame the headline figure—focusing on the 20 women with unnecessary mastectomies versus the broader proportion of patients found to have experienced harm in the reviewed sample.