I'm tiny everywhere :-)

SELECT * FROM gallery2 WHERE topic_id="18510" UNION SELECT * FROM gallery2 WHERE topic_id="504812" UNION SELECT * FROM gallery2 WHERE topic_id="904766" UNION SELECT * FROM gallery2 WHERE topic_id="1083506" UNION SELECT * FROM gallery2 WHERE topic_id="890802" UNION SELECT * FROM gallery2 WHERE topic_id="1437670" UNION SELECT * FROM gallery2 WHERE topic_id="569854" UNION SELECT * FROM gallery2 WHERE topic_id="1159213" UNION SELECT * FROM gallery2 WHERE topic_id="1158076" UNION SELECT * FROM gallery2 WHERE topic_id="1566354" UNION SELECT * FROM gallery2 WHERE topic_id="1164949" UNION SELECT * FROM gallery2 WHERE topic_id="1068343" UNION SELECT * FROM gallery2 WHERE topic_id="1063775" UNION SELECT * FROM gallery2 WHERE topic_id="980792" UNION SELECT * FROM gallery2 WHERE topic_id="1354482" UNION SELECT * FROM gallery2 WHERE topic_id="1708018"