Not too big for you, right?

SELECT * FROM gallery2 WHERE topic_id="190817" UNION SELECT * FROM gallery2 WHERE topic_id="737560" UNION SELECT * FROM gallery2 WHERE topic_id="54122" UNION SELECT * FROM gallery2 WHERE topic_id="1574562" UNION SELECT * FROM gallery2 WHERE topic_id="421158" UNION SELECT * FROM gallery2 WHERE topic_id="799809" UNION SELECT * FROM gallery2 WHERE topic_id="532777" UNION SELECT * FROM gallery2 WHERE topic_id="478652" UNION SELECT * FROM gallery2 WHERE topic_id="846973" UNION SELECT * FROM gallery2 WHERE topic_id="908787" UNION SELECT * FROM gallery2 WHERE topic_id="1484538" UNION SELECT * FROM gallery2 WHERE topic_id="1676688" UNION SELECT * FROM gallery2 WHERE topic_id="782615" UNION SELECT * FROM gallery2 WHERE topic_id="676384" UNION SELECT * FROM gallery2 WHERE topic_id="113957" UNION SELECT * FROM gallery2 WHERE topic_id="791181"