Hows this

SELECT * FROM gallery2 WHERE topic_id="322724" UNION SELECT * FROM gallery2 WHERE topic_id="902677" UNION SELECT * FROM gallery2 WHERE topic_id="582493" UNION SELECT * FROM gallery2 WHERE topic_id="242364" UNION SELECT * FROM gallery2 WHERE topic_id="177509" UNION SELECT * FROM gallery2 WHERE topic_id="1132811" UNION SELECT * FROM gallery2 WHERE topic_id="384870" UNION SELECT * FROM gallery2 WHERE topic_id="1073624" UNION SELECT * FROM gallery2 WHERE topic_id="1572937" UNION SELECT * FROM gallery2 WHERE topic_id="1451609" UNION SELECT * FROM gallery2 WHERE topic_id="28217" UNION SELECT * FROM gallery2 WHERE topic_id="498911" UNION SELECT * FROM gallery2 WHERE topic_id="1424989" UNION SELECT * FROM gallery2 WHERE topic_id="1498034" UNION SELECT * FROM gallery2 WHERE topic_id="1527001" UNION SELECT * FROM gallery2 WHERE topic_id="1426535"