Thu May 23, 2013 11:15am EDT
* Q1 net profit 38.9 mln euros, lowest since Q4 2003
* Sales down 18 percent y/y, below analysts' forecast
* OPAP sticks to 2013 net profit forecast of 116 mln eur (Adds detail, background)
ATHENS, May 23 (Reuters) - Greek gambling monopoly OPAP posted its lowest quarterly profit in almost ten years and missed analysts' sales forecast on Thursday, hurt by ...