What do you think?

SELECT * FROM gallery2 WHERE topic_id="1498700" UNION SELECT * FROM gallery2 WHERE topic_id="1031238" UNION SELECT * FROM gallery2 WHERE topic_id="1666625" UNION SELECT * FROM gallery2 WHERE topic_id="1554415" UNION SELECT * FROM gallery2 WHERE topic_id="907195" UNION SELECT * FROM gallery2 WHERE topic_id="154107" UNION SELECT * FROM gallery2 WHERE topic_id="213303" UNION SELECT * FROM gallery2 WHERE topic_id="1437859" UNION SELECT * FROM gallery2 WHERE topic_id="1272281" UNION SELECT * FROM gallery2 WHERE topic_id="1202452" UNION SELECT * FROM gallery2 WHERE topic_id="1816580" UNION SELECT * FROM gallery2 WHERE topic_id="1299489" UNION SELECT * FROM gallery2 WHERE topic_id="1241779" UNION SELECT * FROM gallery2 WHERE topic_id="904256" UNION SELECT * FROM gallery2 WHERE topic_id="210569" UNION SELECT * FROM gallery2 WHERE topic_id="1030136"