LETTER TO THE EDITOR Why

we need international agreement on terms and definitions to assess clinical outcome after endometriosis surgery Sir, We congratulate the authors of a prospective clinical outcome study after conservative surgery by the shaving technique for deep rectova-ginal endometriotic (RVE) nodules (Donnez and Squifflet, 2010). We do however have some post publication peer review comments (Anderson, 1999). Firstly, only one group worldwide has published outcome data after the shaving technique in two studies in the last 16 years (Donnez et al., 1995; Donnez and Squifflet, 2010). Other groups have reported clini-cal outcome after conservative surgery for deep RVE nodules, but