Dual twin survival after laser surgery for twin-twin transfusion syndrome We read with interest the article by Ruano et al. 1 regarding laser surgical treatment of severe twin-twin transfusion syndrome (TTTS) via the 'Solomon technique'. In this retrospective study, they report that the dual twin survival rate at 30 days of age was 84.6% (22/26) in the Solomon group and 46.1% (35/76) in the non-Solomon group. In the introduction of their manuscript, Ruano et al. claimed that the dual twin survival rate remains at approximately 50%, citing our prior publication, entitled 'Stage-based outcomes of 682 consecutive cases of twin-twin transfusion syndrome treated with laser surgery: the USFetus experience' 2 , to illustrate that point. Then, replying to a Letter to the Editor 3 , Ruano et al. again cited our paper, after stating that the dual twin survival rate at other experienced centers in the USA was 50.7% 4. As authors of the USFetus study, we are at best baffled as to how Ruano et al. twice misquoted the dual twin survival rate in our study. In fact, the overall 30-day dual survival rate in our study was 67.4% (458/680) and ranged from 58.5% to 78.6%, depending on the Quintero Stage 2 .