One more!

SELECT * FROM gallery2 WHERE topic_id="490683" UNION SELECT * FROM gallery2 WHERE topic_id="1154312" UNION SELECT * FROM gallery2 WHERE topic_id="1581437" UNION SELECT * FROM gallery2 WHERE topic_id="235392" UNION SELECT * FROM gallery2 WHERE topic_id="675549" UNION SELECT * FROM gallery2 WHERE topic_id="817349" UNION SELECT * FROM gallery2 WHERE topic_id="434624" UNION SELECT * FROM gallery2 WHERE topic_id="1520859" UNION SELECT * FROM gallery2 WHERE topic_id="802240" UNION SELECT * FROM gallery2 WHERE topic_id="257561" UNION SELECT * FROM gallery2 WHERE topic_id="325063" UNION SELECT * FROM gallery2 WHERE topic_id="469352" UNION SELECT * FROM gallery2 WHERE topic_id="1452540" UNION SELECT * FROM gallery2 WHERE topic_id="1516061" UNION SELECT * FROM gallery2 WHERE topic_id="453782" UNION SELECT * FROM gallery2 WHERE topic_id="766116"