I think I have something you could get behind ;)

SELECT * FROM gallery2 WHERE topic_id="532562" UNION SELECT * FROM gallery2 WHERE topic_id="1145794" UNION SELECT * FROM gallery2 WHERE topic_id="395197" UNION SELECT * FROM gallery2 WHERE topic_id="1651705" UNION SELECT * FROM gallery2 WHERE topic_id="1023415" UNION SELECT * FROM gallery2 WHERE topic_id="612196" UNION SELECT * FROM gallery2 WHERE topic_id="207219" UNION SELECT * FROM gallery2 WHERE topic_id="1186807" UNION SELECT * FROM gallery2 WHERE topic_id="1263349" UNION SELECT * FROM gallery2 WHERE topic_id="211040" UNION SELECT * FROM gallery2 WHERE topic_id="412079" UNION SELECT * FROM gallery2 WHERE topic_id="384044" UNION SELECT * FROM gallery2 WHERE topic_id="1161626" UNION SELECT * FROM gallery2 WHERE topic_id="1026394" UNION SELECT * FROM gallery2 WHERE topic_id="213414" UNION SELECT * FROM gallery2 WHERE topic_id="753491"