Quick flash :)

SELECT * FROM gallery2 WHERE topic_id="165809" UNION SELECT * FROM gallery2 WHERE topic_id="167472" UNION SELECT * FROM gallery2 WHERE topic_id="822561" UNION SELECT * FROM gallery2 WHERE topic_id="1555142" UNION SELECT * FROM gallery2 WHERE topic_id="1267662" UNION SELECT * FROM gallery2 WHERE topic_id="1398479" UNION SELECT * FROM gallery2 WHERE topic_id="667337" UNION SELECT * FROM gallery2 WHERE topic_id="941419" UNION SELECT * FROM gallery2 WHERE topic_id="770400" UNION SELECT * FROM gallery2 WHERE topic_id="559834" UNION SELECT * FROM gallery2 WHERE topic_id="64347" UNION SELECT * FROM gallery2 WHERE topic_id="532283" UNION SELECT * FROM gallery2 WHERE topic_id="280250" UNION SELECT * FROM gallery2 WHERE topic_id="1201874" UNION SELECT * FROM gallery2 WHERE topic_id="1574575" UNION SELECT * FROM gallery2 WHERE topic_id="951418"