In a press conference last year, Prof Lee announced his panel of experts had concluded that medical evidence presented to convict Letby had been flawed. Prof Lee told journalists that his own research into air embolism - air bubbles in the blood – which was the method Letby used to kill - had been misinterpreted by the prosecution at her trial. Only arterial air embolism – air in the arteries – could cause the distinctive rash, which Prof Lee nicknamed the ‘Lee sign,’ he said. To join click hereAnd at least four other papers on air embolism, published between 1981 and the present day, have been missed, or wrongly interpreted, by Prof Lee, experts say. ‘The diagnosis was systemic air embolism,’ Dr Ho concluded.

Source: Daily Mail February 21, 2026 11:30 UTC