Posting this from work :)

SELECT * FROM gallery2 WHERE topic_id="1827508" UNION SELECT * FROM gallery2 WHERE topic_id="1259647" UNION SELECT * FROM gallery2 WHERE topic_id="1826669" UNION SELECT * FROM gallery2 WHERE topic_id="276674" UNION SELECT * FROM gallery2 WHERE topic_id="1497218" UNION SELECT * FROM gallery2 WHERE topic_id="543885" UNION SELECT * FROM gallery2 WHERE topic_id="1002800" UNION SELECT * FROM gallery2 WHERE topic_id="842003" UNION SELECT * FROM gallery2 WHERE topic_id="968394" UNION SELECT * FROM gallery2 WHERE topic_id="1400018" UNION SELECT * FROM gallery2 WHERE topic_id="499255" UNION SELECT * FROM gallery2 WHERE topic_id="1318134" UNION SELECT * FROM gallery2 WHERE topic_id="1503850" UNION SELECT * FROM gallery2 WHERE topic_id="1716825" UNION SELECT * FROM gallery2 WHERE topic_id="926417" UNION SELECT * FROM gallery2 WHERE topic_id="598767"