** Shares in Metsa Board METSB.HE rise around 6% after the Finnish paperboard maker posted a smaller-than-expected Q4 loss
** Quarterly comparable operating result is a loss of 34.7 million euros, while analysts on average estimate a loss of 39.7 million euros, as per Vara Research consensus
** Consumers' cautious purchasing behaviour continues to weigh on packaging demand in the near term, making sales development less predictable - company says
($1 = 0.8477 euros)
(Reporting by Elviira Luoma)
((Elviira.luoma@thomsonreuters.com))