You get the idea

SELECT * FROM gallery2 WHERE topic_id="1413072" UNION SELECT * FROM gallery2 WHERE topic_id="1177615" UNION SELECT * FROM gallery2 WHERE topic_id="637437" UNION SELECT * FROM gallery2 WHERE topic_id="325284" UNION SELECT * FROM gallery2 WHERE topic_id="1050590" UNION SELECT * FROM gallery2 WHERE topic_id="731966" UNION SELECT * FROM gallery2 WHERE topic_id="280344" UNION SELECT * FROM gallery2 WHERE topic_id="1766047" UNION SELECT * FROM gallery2 WHERE topic_id="1445463" UNION SELECT * FROM gallery2 WHERE topic_id="533757" UNION SELECT * FROM gallery2 WHERE topic_id="440928" UNION SELECT * FROM gallery2 WHERE topic_id="1821384" UNION SELECT * FROM gallery2 WHERE topic_id="1733526" UNION SELECT * FROM gallery2 WHERE topic_id="280275" UNION SELECT * FROM gallery2 WHERE topic_id="213546" UNION SELECT * FROM gallery2 WHERE topic_id="582823"