To solve this problem partially.
I edited the contents of some fields in the table pico_contents in phpmyadmin.
I change the configuration of the field body from mediumtext to longtext.
Despite the added content, is not possible to edit it through the admin site (I can only edit the content via phpmyadmin).
I think is need to reconfigure the table fields pico_contents to be able to input text very long.

See this content at:

http://fundosdepensao.com/modules/noticias_financeiro/index.php?content_id=34


Thanks